d312c079c51f2bf011902df86e1ca4cac84eb7c74ff104fa48a505caa88ef2fe

General

Target

challenge-files/challenge-files/docs 06.02.2021.docm
Size

43KB
MD5

f08771b9fdfe82caaa089641e2348c8e
SHA1

b02c121597c9d56d7fab76b54834d5f3bd961e8c
SHA256

cc721111b5924cfeb91440ecaccc60ecc30d10fffbdab262f7c0a17027f527d1
SHA512

3bb2b582e7119c346473f78056f95e0890a3e74976de733739af9aaef810c4e62b35d7f81ec52acfbf675d3d501a048a36fa323ef76ee8843502424211b46ebd

Score

10^/10

persistence

Malware Config

Signatures

Process spawned unexpected child process 2 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

explorer.exemsedge.exe

description	pid	pid_target	process	target process
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	3476	868	explorer.exe	WINWORD.EXE
Parent C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE is not expected to spawn this process	1196	868	msedge.exe	WINWORD.EXE

Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.

Query Registry
T1012

System Information Discovery
T1082

Processes:

mshta.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation mshta.exe
Adds Run key to start application 2 TTPs 1 IoCs
persistence

Registry Run Keys / Startup Folder
T1060

Modify Registry
T1112

Processes:

msedge.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Windows\CurrentVersion\Run msedge.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Control Panel\International\Geo\Nation	mshta.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000\Software\Microsoft\Windows\CurrentVersion\Run	msedge.exe

Checks processor information in registry 2 TTPs 3 IoCs

Processor information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 6 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXEmsedge.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemManufacturer	msedge.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemProductName	msedge.exe
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE

Modifies registry class 2 IoCs

Processes:

msedge.exeexplorer.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	msedge.exe
Key created	\REGISTRY\USER\S-1-5-21-2660308776-3705150086-26593515-1000_Classes\Local Settings	explorer.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

868 WINWORD.EXE
868 WINWORD.EXE
Suspicious behavior: EnumeratesProcesses 4 IoCs

Processes:

msedge.exemsedge.exe

pid process

264 msedge.exe
264 msedge.exe
1196 msedge.exe
1196 msedge.exe
Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary 4 IoCs

Processes:

msedge.exe

pid process

1196 msedge.exe
1196 msedge.exe
1196 msedge.exe
1196 msedge.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

msedge.exe

pid process

1196 msedge.exe
1196 msedge.exe
1196 msedge.exe
1196 msedge.exe
Suspicious use of SetWindowsHookEx 9 IoCs

Processes:

WINWORD.EXE

pid process

868 WINWORD.EXE
868 WINWORD.EXE
868 WINWORD.EXE
868 WINWORD.EXE
868 WINWORD.EXE
868 WINWORD.EXE
868 WINWORD.EXE
868 WINWORD.EXE
868 WINWORD.EXE

pid	process
868	WINWORD.EXE
868	WINWORD.EXE

pid	process
264	msedge.exe
264	msedge.exe
1196	msedge.exe
1196	msedge.exe

pid	process
1196	msedge.exe
1196	msedge.exe
1196	msedge.exe
1196	msedge.exe

pid	process
1196	msedge.exe
1196	msedge.exe
1196	msedge.exe
1196	msedge.exe

pid	process
868	WINWORD.EXE
868	WINWORD.EXE
868	WINWORD.EXE
868	WINWORD.EXE
868	WINWORD.EXE
868	WINWORD.EXE
868	WINWORD.EXE
868	WINWORD.EXE
868	WINWORD.EXE

Suspicious use of WriteProcessMemory 64 IoCs

Processes:

WINWORD.EXEexplorer.exemshta.exemsedge.exe

description	pid	process	target process
PID 868 wrote to memory of 3476	868	WINWORD.EXE	explorer.exe
PID 868 wrote to memory of 3476	868	WINWORD.EXE	explorer.exe
PID 4584 wrote to memory of 1716	4584	explorer.exe	mshta.exe
PID 4584 wrote to memory of 1716	4584	explorer.exe	mshta.exe
PID 4584 wrote to memory of 1716	4584	explorer.exe	mshta.exe
PID 1716 wrote to memory of 1280	1716	mshta.exe	rundll32.exe
PID 1716 wrote to memory of 1280	1716	mshta.exe	rundll32.exe
PID 1716 wrote to memory of 1280	1716	mshta.exe	rundll32.exe
PID 868 wrote to memory of 1196	868	WINWORD.EXE	msedge.exe
PID 868 wrote to memory of 1196	868	WINWORD.EXE	msedge.exe
PID 1196 wrote to memory of 1976	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 1976	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 640	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 264	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 264	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 3944	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 3944	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 3944	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 3944	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 3944	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 3944	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 3944	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 3944	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 3944	1196	msedge.exe	msedge.exe
PID 1196 wrote to memory of 3944	1196	msedge.exe	msedge.exe

C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
"C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\challenge-files\challenge-files\docs 06.02.2021.docm" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:868

C:\Windows\explorer.exe
explorer collectionBoxConst.hta
2⤵
- Process spawned unexpected child process
PID:3476

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --single-argument https://go.microsoft.com/fwlink/?LinkId=614981
2⤵
- Process spawned unexpected child process
- Adds Run key to start application
- Enumerates system info in registry
- Modifies registry class
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: NtCreateUserProcessBlockNonMicrosoftBinary
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1196

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=crashpad-handler "--user-data-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" /prefetch:7 --monitor-self-annotation=ptype=crashpad-handler "--database=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Crashpad" "--metrics-dir=C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data" --annotation=IsOfficialBuild=1 --annotation=channel= --annotation=chromium-version=92.0.4515.131 "--annotation=exe=C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --annotation=plat=Win64 "--annotation=prod=Microsoft Edge" --annotation=ver=92.0.902.67 --initial-client-data=0xf8,0xfc,0x100,0xd4,0x104,0x7ff9316a46f8,0x7ff9316a4708,0x7ff9316a4718
3⤵
PID:1976

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=gpu-process --field-trial-handle=2036,10289282566446078370,2950497905865591664,131072 --gpu-preferences=UAAAAAAAAADgAAAQAAAAAAAAAAAAAAAAAABgAAAAAAAwAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAHgAAAAAAAAAeAAAAAAAAAAoAAAABAAAACAAAAAAAAAAKAAAAAAAAAAwAAAAAAAAADgAAAAAAAAAEAAAAAAAAAAAAAAADQAAABAAAAAAAAAAAQAAAA0AAAAQAAAAAAAAAAQAAAANAAAAEAAAAAAAAAAHAAAADQAAAAgAAAAAAAAACAAAAAAAAAA= --mojo-platform-channel-handle=2088 /prefetch:2
3⤵
PID:640

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=network.mojom.NetworkService --field-trial-handle=2036,10289282566446078370,2950497905865591664,131072 --lang=en-US --service-sandbox-type=none --mojo-platform-channel-handle=2172 /prefetch:3
3⤵
- Suspicious behavior: EnumeratesProcesses
PID:264

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=storage.mojom.StorageService --field-trial-handle=2036,10289282566446078370,2950497905865591664,131072 --lang=en-US --service-sandbox-type=utility --mojo-platform-channel-handle=2732 /prefetch:8
3⤵
PID:3944

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2036,10289282566446078370,2950497905865591664,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=6 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3516 /prefetch:1
3⤵
PID:4380

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2036,10289282566446078370,2950497905865591664,131072 --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=5 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=3532 /prefetch:1
3⤵
PID:3444

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=data_decoder.mojom.DataDecoderService --field-trial-handle=2036,10289282566446078370,2950497905865591664,131072 --lang=en-US --service-sandbox-type=service --mojo-platform-channel-handle=5240 /prefetch:8
3⤵
PID:4388

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2036,10289282566446078370,2950497905865591664,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=8 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5116 /prefetch:1
3⤵
PID:2672

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=renderer --field-trial-handle=2036,10289282566446078370,2950497905865591664,131072 --disable-gpu-compositing --lang=en-US --disable-client-side-phishing-detection --device-scale-factor=1 --num-raster-threads=1 --renderer-client-id=9 --no-v8-untrusted-code-mitigations --mojo-platform-channel-handle=5700 /prefetch:1
3⤵
PID:4600

C:\Windows\explorer.exe
C:\Windows\explorer.exe /factory,{75dff2b7-6936-4c06-a8bb-676a7b00b24b} -Embedding
1⤵
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:4584

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\Users\Admin\AppData\Local\Temp\challenge-files\challenge-files\collectionBoxConst.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1716

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" c:\users\public\collectionBoxConst.jpg,PluginInit
3⤵
PID:1280

C:\Windows\System32\CompPkgSrv.exe
C:\Windows\System32\CompPkgSrv.exe -Embedding
1⤵
PID:3940

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\Content\80237EE4964FC9C409AAF55BF996A292_C5130A0BDC8C859A2757D77746C10868

Filesize
471B

MD5
e13e52c01afca5cec00037a35be4a80d

SHA1
9e8a4dcabbee24b878ecccad85e0a4ffdbeea85c

SHA256
92bb55d3fced63e1a5734e5cb4fd2f28040d31377ae1d71129ac697e9b315c16

SHA512
b90ee492db97027d0663a07c51a7e453ac3858a37427253444132eb6d8aa266a48c8001519ef529707ed628a391fdb0f44071687230fe59811bba78987f7b5db

Download Submit
C:\Users\Admin\AppData\LocalLow\Microsoft\CryptnetUrlCache\MetaData\80237EE4964FC9C409AAF55BF996A292_C5130A0BDC8C859A2757D77746C10868

Filesize
412B

MD5
f7d8e7390aac83c158361829bf3f1f0a

SHA1
a8e154be03dad2e98ad607f64097aa69fbd92b83

SHA256
2fa5a3edc0835254d989df50cc582efe3e48bab5ed94c04d5093a8ab974c1b9d

SHA512
8f524d34bc830c2f56d4cfd90ce0232a7a721a100a83d60b39462eef9e1f74fcd30f3c840a0ff775c7a6c87bfe8ad783da059e3385e420a7e313ece1a1c6e886

Download Submit
C:\Users\Admin\AppData\Local\Temp\challenge-files\challenge-files\collectionBoxConst.hta

Filesize
3KB

MD5
99a1a4391c6be3ac5f137c0a092d8edd

SHA1
34afc663a569d0ba183c73ab40ae8d682273d193

SHA256
b25865183c5cd2c5e550aca8476e592b62ed3e37e6b628f955bbed454fdbb100

SHA512
45e5b38d72add4d28234b539071a3cb4059c9c104b5389a43190fd3197843e103fdaf7552c1edcb9bbbabe15b122a8bef0389ce39d6130b438a835c4c2d4f345

Download Submit
\??\pipe\LOCAL\crashpad_1196_QJQGBWEMDKKZVOCV

MD5
d41d8cd98f00b204e9800998ecf8427e

SHA1
da39a3ee5e6b4b0d3255bfef95601890afd80709

SHA256
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

SHA512
cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e

Download Submit
memory/264-145-0x0000000000000000-mapping.dmp

Download
memory/640-144-0x0000000000000000-mapping.dmp

Download
memory/868-134-0x00007FF90EBD0000-0x00007FF90EBE0000-memory.dmp

Filesize
64KB

Download
memory/868-136-0x00007FF90C850000-0x00007FF90C860000-memory.dmp

Filesize
64KB

Download
memory/868-135-0x00007FF90C850000-0x00007FF90C860000-memory.dmp

Filesize
64KB

Download
memory/868-130-0x00007FF90EBD0000-0x00007FF90EBE0000-memory.dmp

Filesize
64KB

Download
memory/868-133-0x00007FF90EBD0000-0x00007FF90EBE0000-memory.dmp

Filesize
64KB

Download
memory/868-132-0x00007FF90EBD0000-0x00007FF90EBE0000-memory.dmp

Filesize
64KB

Download
memory/868-131-0x00007FF90EBD0000-0x00007FF90EBE0000-memory.dmp

Filesize
64KB

Download
memory/1196-141-0x0000000000000000-mapping.dmp

Download
memory/1280-140-0x0000000000000000-mapping.dmp

Download
memory/1716-139-0x0000000000000000-mapping.dmp

Download
memory/1976-142-0x0000000000000000-mapping.dmp

Download
memory/2672-158-0x0000000000000000-mapping.dmp

Download
memory/3444-152-0x0000000000000000-mapping.dmp

Download
memory/3476-137-0x0000000000000000-mapping.dmp

Download
memory/3944-147-0x0000000000000000-mapping.dmp

Download
memory/4380-150-0x0000000000000000-mapping.dmp

Download
memory/4388-156-0x0000000000000000-mapping.dmp

Download
memory/4600-160-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

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Downloads