e2a4320528f9332872848340b5d6a5cffadca8596567e245eb5a401c8ef918b6

Resubmissions

21-01-2021 15:22

210121-qwg92t3xgj 10

21-01-2021 15:09

210121-dv7rvp9b5e 10

21-12-2020 23:00

201221-c1vx2ve4rn 10

Analysis

max time kernel
139s
max time network
135s
platform
windows10_x64
resource
win10v20201028
submitted
21-01-2021 15:09

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General

Target

intelligence 12.20.doc
Size

80KB
MD5

2eac8507ab396c2e9476ae91a2bf92af
SHA1

fbbf0822676e29969047b1e0d0ba85704183445e
SHA256

e2a4320528f9332872848340b5d6a5cffadca8596567e245eb5a401c8ef918b6
SHA512

baa5d0d27031999ee4c8f4f8424807f2f9e1645a2ee455bfe31a559b9821ad519f942ada5225b54a459bdc6422837065ae88a41caa907a7865d8891624cdcbfe

Score

10^/10

ransomware

Malware Config

Signatures

Process spawned unexpected child process 1 IoCs
This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exe

description pid pid_target process target process

Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process 1528 3460 rundll32.exe
Blocklisted process makes network request 1 IoCs

Processes:

mshta.exe

flow pid process

25 4084 mshta.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
ransomware

System Information Discovery
T1082

description	pid	pid_target	process	target process
Parent C:\Windows\system32\wbem\wmiprvse.exe is not expected to spawn this process	1528	3460	rundll32.exe

flow	pid	process
25	4084	mshta.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 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

Processes:

WINWORD.EXE

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

Modifies registry class 1 IoCs

Processes:

rundll32.exe

description ioc process

Key created \REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings rundll32.exe
Suspicious behavior: AddClipboardFormatListener 2 IoCs

Processes:

WINWORD.EXE

pid process

724 WINWORD.EXE
724 WINWORD.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-1985363256-3005190890-1182679451-1000_Classes\Local Settings	rundll32.exe

Suspicious use of SetWindowsHookEx 18 IoCs

Processes:

WINWORD.EXE

pid	process
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE
724	WINWORD.EXE

Suspicious use of WriteProcessMemory 6 IoCs

Processes:

rundll32.exemshta.exe

description	pid	process	target process
PID 1528 wrote to memory of 4084	1528	rundll32.exe	mshta.exe
PID 1528 wrote to memory of 4084	1528	rundll32.exe	mshta.exe
PID 1528 wrote to memory of 4084	1528	rundll32.exe	mshta.exe
PID 4084 wrote to memory of 2480	4084	mshta.exe	rundll32.exe
PID 4084 wrote to memory of 2480	4084	mshta.exe	rundll32.exe
PID 4084 wrote to memory of 2480	4084	mshta.exe	rundll32.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\intelligence 12.20.doc" /o ""
1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:724

C:\Windows\system32\rundll32.exe
rundll32.exe url.dll,OpenURL c:\users\public\index.hta
1⤵
- Process spawned unexpected child process
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:1528

C:\Windows\SysWOW64\mshta.exe
"C:\Windows\SysWOW64\mshta.exe" "C:\users\public\index.hta" {1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}{1E460BD7-F1C3-4B2E-88BF-4E770A288AF5}
2⤵
- Blocklisted process makes network request
- Suspicious use of WriteProcessMemory
PID:4084

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" c:\programdata\aEUo7.pdf,ShowDialogA -r
3⤵
PID:2480

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Query Registry

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\users\public\index.hta
MD5
1a3f1ff5f6815debe76570808d97dbfb

SHA1
918ff79b132e91b4653c3fd2c02ce4a478a8a584

SHA256
c454f855e42ed6e19c84dd20f22fc1d3e7494546327d0f61fed28bf3c386df5d

SHA512
e63902aabc1b2038c526d6b6bfbc8a0ed76dbe51e4afb11cb257c2c21785f10cea76c314d647f0f22b0c8bd3fe470bc59004c1829ed4270aa9e78c9c9481a349

Download Submit
\??\c:\programdata\aEUo7.pdf
MD5
5d30a56fa6b8bf8bf7bd359ccc48dac7

SHA1
705f41d37a25b6b1104a7895386af11307d7e036

SHA256
34ba901d2bf1c03d430e4a5223099792de9ad5cc3a3812d45a3408714c978385

SHA512
f9372b6ad25175b14f3d620c14e1fcbcb0f64e62d5b0af7cdd396b89e5709f294d2f6f956002298b09a65b28433e8a2f157a1d6a270a7add8b87747c5f591b04

Download Submit
memory/724-2-0x00007FFC10600000-0x00007FFC10610000-memory.dmp

Filesize
64KB

Download
memory/724-3-0x00007FFC10600000-0x00007FFC10610000-memory.dmp

Filesize
64KB

Download
memory/724-4-0x00007FFC10600000-0x00007FFC10610000-memory.dmp

Filesize
64KB

Download
memory/724-5-0x00007FFC10600000-0x00007FFC10610000-memory.dmp

Filesize
64KB

Download
memory/724-6-0x000001EB8A1C0000-0x000001EB8A7F7000-memory.dmp

Filesize
6.2MB

Download
memory/724-7-0x00007FFC0D150000-0x00007FFC0D160000-memory.dmp

Filesize
64KB

Download
memory/2480-10-0x0000000000000000-mapping.dmp

Download
memory/4084-9-0x0000000000000000-mapping.dmp

Download