d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497

General

Target

d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497.exe
Size

81KB
MD5

db677cc452379b31ab4242eb67e3c5d3
SHA1

43d4d9cc6839c4a29024e016fa0cdbb2e560ce13
SHA256

d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497
SHA512

8e1770f848a834ebdb334500d4944c157db69d40805e1477530e1be92f451021f3133b9c1d53aa01fb1c0e37a932ced4542e7ff3d6019a219ead1fa1299dd630
SSDEEP

1536:6mi+xxdgF45E4h2Hnq8OFnouy8CBZVDYTwtaRdoYVJ42e:6mi+/dgy5Ef8doutaZZYCajVJ4

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 3 IoCs

pid	Process
3932	osk.exe
3164	WINWORD.EXE
4088	WINWORD.EXE

UPX packed file 13 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral2/memory/3188-134-0x0000000011000000-0x000000001102F000-memory.dmp	upx
behavioral2/files/0x0006000000022de5-137.dat	upx
behavioral2/files/0x0006000000022de5-138.dat	upx
behavioral2/memory/3188-139-0x0000000011000000-0x000000001102F000-memory.dmp	upx
behavioral2/memory/3932-143-0x0000000011000000-0x000000001102F000-memory.dmp	upx
behavioral2/files/0x0007000000022de6-145.dat	upx
behavioral2/memory/3932-146-0x0000000011000000-0x000000001102F000-memory.dmp	upx
behavioral2/files/0x0007000000022de6-147.dat	upx
behavioral2/memory/3164-150-0x0000000011000000-0x000000001102F000-memory.dmp	upx
behavioral2/files/0x0006000000022de7-151.dat	upx
behavioral2/memory/3164-162-0x0000000011000000-0x000000001102F000-memory.dmp	upx
behavioral2/files/0x0007000000022de6-160.dat	upx
behavioral2/memory/4088-164-0x0000000011000000-0x000000001102F000-memory.dmp	upx

Checks computer location settings 2 TTPs 3 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	WINWORD.EXE
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	osk.exe

Adds Run key to start application 2 TTPs 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\Software\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	WINWORD.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AUTOWORD = "C:\\Windows\\system32\\WINWORD.EXE"	WINWORD.EXE
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Software\Microsoft\Windows\CurrentVersion\Run	WINWORD.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ctfmoon.exe = "C:\\Windows\\system32\\Com\\ctfmoon.exe"	WINWORD.EXE

Enumerates connected drives 3 TTPs 23 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\G:	WINWORD.EXE
File opened (read-only)	\??\K:	WINWORD.EXE
File opened (read-only)	\??\O:	WINWORD.EXE
File opened (read-only)	\??\R:	WINWORD.EXE
File opened (read-only)	\??\V:	WINWORD.EXE
File opened (read-only)	\??\B:	WINWORD.EXE
File opened (read-only)	\??\E:	WINWORD.EXE
File opened (read-only)	\??\F:	WINWORD.EXE
File opened (read-only)	\??\Y:	WINWORD.EXE
File opened (read-only)	\??\Z:	WINWORD.EXE
File opened (read-only)	\??\U:	WINWORD.EXE
File opened (read-only)	\??\W:	WINWORD.EXE
File opened (read-only)	\??\X:	WINWORD.EXE
File opened (read-only)	\??\P:	WINWORD.EXE
File opened (read-only)	\??\T:	WINWORD.EXE
File opened (read-only)	\??\J:	WINWORD.EXE
File opened (read-only)	\??\L:	WINWORD.EXE
File opened (read-only)	\??\M:	WINWORD.EXE
File opened (read-only)	\??\Q:	WINWORD.EXE
File opened (read-only)	\??\S:	WINWORD.EXE
File opened (read-only)	\??\H:	WINWORD.EXE
File opened (read-only)	\??\I:	WINWORD.EXE
File opened (read-only)	\??\N:	WINWORD.EXE

Drops file in System32 directory 11 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\Com\ctfmoon.exe	osk.exe
File opened for modification	C:\Windows\SysWOW64\WINWORD.exe	WINWORD.EXE
File opened for modification	C:\Windows\SysWOW64\Com\ctfmoon.exe	WINWORD.EXE
File opened for modification	C:\Windows\SysWOW64\ConvertToExport.enc	WINWORD.EXE
File opened for modification	C:\Windows\SysWOW64\Recently.enc	WINWORD.EXE
File opened for modification	C:\Windows\SysWOW64\These.enc	WINWORD.EXE
File opened for modification	C:\Windows\SysWOW64\WINWORD.EXE	osk.exe
File opened for modification	C:\Windows\SysWOW64\WINWORD.EXE	WINWORD.EXE
File opened for modification	C:\Windows\SysWOW64\Are.enc	WINWORD.EXE
File opened for modification	C:\Windows\SysWOW64\Files.enc	WINWORD.EXE
File opened for modification	C:\Windows\SysWOW64\Opened.enc	WINWORD.EXE

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

System Information Discovery
T1082

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

description	ioc	Process
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
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000_Classes\Local Settings	d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
1960	WINWORD.EXE
1960	WINWORD.EXE

Suspicious behavior: EnumeratesProcesses 6 IoCs

pid	Process
3932	osk.exe
3932	osk.exe
3932	osk.exe
3932	osk.exe
3164	WINWORD.EXE
3164	WINWORD.EXE

Suspicious use of SetWindowsHookEx 10 IoCs

pid	Process
3188	d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497.exe
3932	osk.exe
3164	WINWORD.EXE
1960	WINWORD.EXE
1960	WINWORD.EXE
4088	WINWORD.EXE
1960	WINWORD.EXE
1960	WINWORD.EXE
1960	WINWORD.EXE
1960	WINWORD.EXE

Suspicious use of WriteProcessMemory 11 IoCs

description	pid	Process	procid_target
PID 3188 wrote to memory of 1960	3188	d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497.exe	79
PID 3188 wrote to memory of 1960	3188	d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497.exe	79
PID 3188 wrote to memory of 3932	3188	d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497.exe	80
PID 3188 wrote to memory of 3932	3188	d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497.exe	80
PID 3188 wrote to memory of 3932	3188	d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497.exe	80
PID 3932 wrote to memory of 3164	3932	osk.exe	81
PID 3932 wrote to memory of 3164	3932	osk.exe	81
PID 3932 wrote to memory of 3164	3932	osk.exe	81
PID 3164 wrote to memory of 4088	3164	WINWORD.EXE	83
PID 3164 wrote to memory of 4088	3164	WINWORD.EXE	83
PID 3164 wrote to memory of 4088	3164	WINWORD.EXE	83

C:\Users\Admin\AppData\Local\Temp\d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497.exe
"C:\Users\Admin\AppData\Local\Temp\d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497.exe"
1⤵
- Checks computer location settings
- Modifies registry class
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:3188
- C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
  "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Windows\Temp\_$Cf\d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497 .doc" /o ""
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:1960
- C:\Windows\Temp\_$Cf\osk.exe
  "C:\Windows\Temp\_$Cf\osk.exe"
  2⤵
  - Executes dropped EXE
  - Checks computer location settings
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:3932
- - C:\Windows\SysWOW64\WINWORD.EXE
    "C:\Windows\system32\WINWORD.EXE"
    3⤵
    - Executes dropped EXE
    - Checks computer location settings
    - Adds Run key to start application
    - Enumerates connected drives
    - Drops file in System32 directory
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:3164
  - - C:\Windows\SysWOW64\WINWORD.EXE
      "C:\Windows\system32\WINWORD.EXE"
      4⤵
      Executes dropped EXE
      Suspicious use of SetWindowsHookEx
      PID:4088

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

Peripheral Device Discovery

Query Registry

System Information Discovery

5

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Windows\SysWOW64\Com\ctfmoon.exe

Filesize
74KB

MD5
862a96836fe55f230039047fc1897b6f

SHA1
56a56c039d90714cefe7d2e7bb02e13c2b04764c

SHA256
0044b6448afbf8cce1057d5226b4baf27708656d9245f06dc9408956ced0cb21

SHA512
d6e77acb572339746797cfb9fd62b90fbcef4590f47eba5db538e97f7535326266b8146e120983d35a0978298083ffae90714ce119ef9c456b428374d288d574

Download Submit
C:\Windows\SysWOW64\WINWORD.EXE

Filesize
74KB

MD5
862a96836fe55f230039047fc1897b6f

SHA1
56a56c039d90714cefe7d2e7bb02e13c2b04764c

SHA256
0044b6448afbf8cce1057d5226b4baf27708656d9245f06dc9408956ced0cb21

SHA512
d6e77acb572339746797cfb9fd62b90fbcef4590f47eba5db538e97f7535326266b8146e120983d35a0978298083ffae90714ce119ef9c456b428374d288d574

Download Submit
C:\Windows\SysWOW64\WINWORD.EXE

Filesize
74KB

MD5
862a96836fe55f230039047fc1897b6f

SHA1
56a56c039d90714cefe7d2e7bb02e13c2b04764c

SHA256
0044b6448afbf8cce1057d5226b4baf27708656d9245f06dc9408956ced0cb21

SHA512
d6e77acb572339746797cfb9fd62b90fbcef4590f47eba5db538e97f7535326266b8146e120983d35a0978298083ffae90714ce119ef9c456b428374d288d574

Download Submit
C:\Windows\SysWOW64\WINWORD.EXE

Filesize
74KB

MD5
862a96836fe55f230039047fc1897b6f

SHA1
56a56c039d90714cefe7d2e7bb02e13c2b04764c

SHA256
0044b6448afbf8cce1057d5226b4baf27708656d9245f06dc9408956ced0cb21

SHA512
d6e77acb572339746797cfb9fd62b90fbcef4590f47eba5db538e97f7535326266b8146e120983d35a0978298083ffae90714ce119ef9c456b428374d288d574

Download Submit
C:\Windows\Temp\_$Cf\d670df86f585fadc670d23efe592cf48dce1a3870f63743cb8430fd9cdc45497 .doc

Filesize
24KB

MD5
077d942e2b948d8e7c60303969b5d1f5

SHA1
5ab2797a829ddd70646f1cbd84c983839f4a76cd

SHA256
ba90e1651eeceeb4b5848694dda44fe936526b3b30f8344f24b798f25be7f6ca

SHA512
49772fccbe3ecf06d625baf91ce68f49d7e21316086d8c6cec2c330e5a75d40cf0da5ed755d470f899f56ac37a0fd40a3a0f4968a84297d972a3025c30a25ba9

Download Submit
C:\Windows\Temp\_$Cf\osk.exe

Filesize
74KB

MD5
862a96836fe55f230039047fc1897b6f

SHA1
56a56c039d90714cefe7d2e7bb02e13c2b04764c

SHA256
0044b6448afbf8cce1057d5226b4baf27708656d9245f06dc9408956ced0cb21

SHA512
d6e77acb572339746797cfb9fd62b90fbcef4590f47eba5db538e97f7535326266b8146e120983d35a0978298083ffae90714ce119ef9c456b428374d288d574

Download Submit
C:\Windows\Temp\_$Cf\osk.exe

Filesize
74KB

MD5
862a96836fe55f230039047fc1897b6f

SHA1
56a56c039d90714cefe7d2e7bb02e13c2b04764c

SHA256
0044b6448afbf8cce1057d5226b4baf27708656d9245f06dc9408956ced0cb21

SHA512
d6e77acb572339746797cfb9fd62b90fbcef4590f47eba5db538e97f7535326266b8146e120983d35a0978298083ffae90714ce119ef9c456b428374d288d574

Download Submit
memory/1960-159-0x00007FFB6E6B0000-0x00007FFB6E6C0000-memory.dmp

Filesize
64KB

Download
memory/1960-169-0x00007FFB70CF0000-0x00007FFB70D00000-memory.dmp

Filesize
64KB

Download
memory/1960-168-0x00007FFB70CF0000-0x00007FFB70D00000-memory.dmp

Filesize
64KB

Download
memory/1960-167-0x00007FFB70CF0000-0x00007FFB70D00000-memory.dmp

Filesize
64KB

Download
memory/1960-166-0x00007FFB70CF0000-0x00007FFB70D00000-memory.dmp

Filesize
64KB

Download
memory/1960-157-0x00007FFB6E6B0000-0x00007FFB6E6C0000-memory.dmp

Filesize
64KB

Download
memory/1960-152-0x00007FFB70CF0000-0x00007FFB70D00000-memory.dmp

Filesize
64KB

Download
memory/1960-153-0x00007FFB70CF0000-0x00007FFB70D00000-memory.dmp

Filesize
64KB

Download
memory/1960-154-0x00007FFB70CF0000-0x00007FFB70D00000-memory.dmp

Filesize
64KB

Download
memory/1960-155-0x00007FFB70CF0000-0x00007FFB70D00000-memory.dmp

Filesize
64KB

Download
memory/1960-156-0x00007FFB70CF0000-0x00007FFB70D00000-memory.dmp

Filesize
64KB

Download
memory/3164-162-0x0000000011000000-0x000000001102F000-memory.dmp

Filesize
188KB

Download
memory/3164-150-0x0000000011000000-0x000000001102F000-memory.dmp

Filesize
188KB

Download
memory/3188-134-0x0000000011000000-0x000000001102F000-memory.dmp

Filesize
188KB

Download
memory/3188-139-0x0000000011000000-0x000000001102F000-memory.dmp

Filesize
188KB

Download
memory/3932-143-0x0000000011000000-0x000000001102F000-memory.dmp

Filesize
188KB

Download
memory/3932-146-0x0000000011000000-0x000000001102F000-memory.dmp

Filesize
188KB

Download
memory/4088-164-0x0000000011000000-0x000000001102F000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads