darkcomet | 8d66803ee8c28f8c9930677f18a331867e46977e982aea278131fd0592c31d7f

General

Target

040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Size

647KB
MD5

040e131e6072a3bbb3472d17446ed7a4
SHA1

c1d2a37b3ec90c19ca49602a8a03f64a16d3c706
SHA256

8d66803ee8c28f8c9930677f18a331867e46977e982aea278131fd0592c31d7f
SHA512

1941a28b8b2a208764fb708a957b78af75e060df7c0f4c1b0aade3531e65874cb62f301ba4904b61bcdd6f15d817d043176301af8fef99dd34452a4264a37106
SSDEEP

12288:A8UaT9XY2siA0bMG09xD7I3Gg8ecgVvfBoCDBOQQYbVXpuy1f/gORixm:5UKoN0bUxgGa/pfBHDb+y1HgZ8

Score

10^/10

darkcomet evasion persistence rat trojan

Malware Config

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

Processes:

040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\Documents\\word.exe"	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe

Sets file to hidden 1 TTPs 1 IoCs
Modifies file attributes to stop it showing in Explorer etc.
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exe

pid process

2728 attrib.exe

pid	process
2728	attrib.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:

040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\Control Panel\International\Geo\Nation	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe

Executes dropped EXE 1 IoCs

Processes:

word.exe

pid process

2520 word.exe

pid	process
2520	word.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

Processes:

040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exeword.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Audio Driver = "C:\\Users\\Admin\\Documents\\word.exe"	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3808065738-1666277613-1125846146-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Audio Driver = "C:\\Users\\Admin\\Documents\\word.exe"	word.exe

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

System Information Discovery
T1082

Modifies registry class 1 IoCs

Processes:

040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

word.exe

pid process

2520 word.exe

pid	process
2520	word.exe

Suspicious use of AdjustPrivilegeToken 48 IoCs

Processes:

040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exeword.exe

description	pid	process
Token: SeIncreaseQuotaPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeSecurityPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeBackupPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeRestorePrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeShutdownPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeDebugPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeUndockPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: 33	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: 34	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: 35	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: 36	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
Token: SeIncreaseQuotaPrivilege	2520	word.exe
Token: SeSecurityPrivilege	2520	word.exe
Token: SeTakeOwnershipPrivilege	2520	word.exe
Token: SeLoadDriverPrivilege	2520	word.exe
Token: SeSystemProfilePrivilege	2520	word.exe
Token: SeSystemtimePrivilege	2520	word.exe
Token: SeProfSingleProcessPrivilege	2520	word.exe
Token: SeIncBasePriorityPrivilege	2520	word.exe
Token: SeCreatePagefilePrivilege	2520	word.exe
Token: SeBackupPrivilege	2520	word.exe
Token: SeRestorePrivilege	2520	word.exe
Token: SeShutdownPrivilege	2520	word.exe
Token: SeDebugPrivilege	2520	word.exe
Token: SeSystemEnvironmentPrivilege	2520	word.exe
Token: SeChangeNotifyPrivilege	2520	word.exe
Token: SeRemoteShutdownPrivilege	2520	word.exe
Token: SeUndockPrivilege	2520	word.exe
Token: SeManageVolumePrivilege	2520	word.exe
Token: SeImpersonatePrivilege	2520	word.exe
Token: SeCreateGlobalPrivilege	2520	word.exe
Token: 33	2520	word.exe
Token: 34	2520	word.exe
Token: 35	2520	word.exe
Token: 36	2520	word.exe

Suspicious use of SetWindowsHookEx 1 IoCs

Processes:

word.exe

pid process

2520 word.exe

pid	process
2520	word.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.execmd.exe

description	pid	process	target process
PID 2136 wrote to memory of 2292	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe	cmd.exe
PID 2136 wrote to memory of 2292	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe	cmd.exe
PID 2136 wrote to memory of 2292	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe	cmd.exe
PID 2292 wrote to memory of 2728	2292	cmd.exe	attrib.exe
PID 2292 wrote to memory of 2728	2292	cmd.exe	attrib.exe
PID 2292 wrote to memory of 2728	2292	cmd.exe	attrib.exe
PID 2136 wrote to memory of 2520	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe	word.exe
PID 2136 wrote to memory of 2520	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe	word.exe
PID 2136 wrote to memory of 2520	2136	040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe	word.exe

Views/modifies file attributes 1 TTPs 1 IoCs
evasion

Hidden Files and Directories
T1564.001

Processes:

attrib.exe

pid process

2728 attrib.exe

pid	process
2728	attrib.exe

C:\Users\Admin\AppData\Local\Temp\040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe"
1⤵
- Modifies WinLogon for persistence
- Checks computer location settings
- Adds Run key to start application
- Modifies registry class
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2136

C:\Windows\SysWOW64\cmd.exe
"C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe" +s +h
2⤵
- Suspicious use of WriteProcessMemory
PID:2292

C:\Windows\SysWOW64\attrib.exe
attrib "C:\Users\Admin\AppData\Local\Temp\040e131e6072a3bbb3472d17446ed7a4_JaffaCakes118.exe" +s +h
3⤵
- Sets file to hidden
- Views/modifies file attributes
PID:2728

C:\Users\Admin\Documents\word.exe
"C:\Users\Admin\Documents\word.exe"
2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
PID:2520

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4112 --field-trial-handle=2292,i,2103142837140538807,15881446839139365070,262144 --variations-seed-version /prefetch:8
1⤵
PID:4804

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

2

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Winlogon Helper DLL

1

T1547.004

Defense Evasion

Modify Registry

2

T1112

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

C:\Users\Admin\Documents\word.exe
Filesize
647KB

MD5
040e131e6072a3bbb3472d17446ed7a4

SHA1
c1d2a37b3ec90c19ca49602a8a03f64a16d3c706

SHA256
8d66803ee8c28f8c9930677f18a331867e46977e982aea278131fd0592c31d7f

SHA512
1941a28b8b2a208764fb708a957b78af75e060df7c0f4c1b0aade3531e65874cb62f301ba4904b61bcdd6f15d817d043176301af8fef99dd34452a4264a37106

Download Submit
memory/2136-63-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2136-0-0x0000000002360000-0x0000000002361000-memory.dmp

Filesize
4KB

Download
memory/2520-68-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2520-70-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2520-65-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2520-66-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2520-67-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2520-62-0x00000000006B0000-0x00000000006B1000-memory.dmp

Filesize
4KB

Download
memory/2520-69-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2520-64-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2520-71-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2520-72-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2520-73-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2520-74-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2520-75-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2520-76-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download
memory/2520-77-0x0000000000400000-0x00000000004AF000-memory.dmp

Filesize
700KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads