darkcomet | 75596aea0608775640cd3f48fd5d8004dcd01dea41ffee9260368bdcf822fd84

Analysis

max time kernel
149s
max time network
150s
platform
windows10-2004_x64
resource
win10v2004-20240709-en
resource tags

arch:x64arch:x86image:win10v2004-20240709-enlocale:en-usos:windows10-2004-x64system
submitted
14/07/2024, 16:28

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General

Target
469d1452595615730bcc748044fd420b_JaffaCakes118.exe
Size 1.8MB
Sample240714-tyv2fa1akd
SHA256 75596aea0608775640cd3f48fd5d8004dcd01dea41ffee9260368bdcf822fd84
MD5 469d1452595615730bcc748044fd420b
SHA1 700f869a6a7464f41c255a7758aab08ebb35af32
SHA512 c996fded10cfdf3b86fd97cc272becbf87072d6c519fea05f774fc000becc38769f541eae8585564c6c5fdf66c9081daa086f2a19d8a7428d35eb669a45451c8
SSDEEP 24576:B+mCPwZpDgHXv6llGZOnI7xbOLU8LLbPGF4Kjr43UUcJ4d54Nq3twAFTbRVHxgtD:BnGwPolSrE4KnSUjSdwEHRVHxXw
MD5 SHA1 SHA512 SSDEEP

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

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

pid	Process
1460	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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000\Control Panel\International\Geo\Nation	vbc.exe

Executes dropped EXE 2 IoCs

pid	Process
1976	vbc.exe
3876	NYANCATPROGRESSBAR.EXE

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-1176886754-713327781-2233697964-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\WinUpdtr = "C:\\Users\\Admin\\AppData\\Roaming\\WinUpdtr\\469d1452595615730bcc748044fd420b_JaffaCakes118.exe"	469d1452595615730bcc748044fd420b_JaffaCakes118.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 680 set thread context of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86

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

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 opened	\REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	dw20.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	dw20.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	dw20.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1976	vbc.exe

Suspicious use of AdjustPrivilegeToken 28 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	1976	vbc.exe
Token: SeSecurityPrivilege	1976	vbc.exe
Token: SeTakeOwnershipPrivilege	1976	vbc.exe
Token: SeLoadDriverPrivilege	1976	vbc.exe
Token: SeSystemProfilePrivilege	1976	vbc.exe
Token: SeSystemtimePrivilege	1976	vbc.exe
Token: SeProfSingleProcessPrivilege	1976	vbc.exe
Token: SeIncBasePriorityPrivilege	1976	vbc.exe
Token: SeCreatePagefilePrivilege	1976	vbc.exe
Token: SeBackupPrivilege	1976	vbc.exe
Token: SeRestorePrivilege	1976	vbc.exe
Token: SeShutdownPrivilege	1976	vbc.exe
Token: SeDebugPrivilege	1976	vbc.exe
Token: SeSystemEnvironmentPrivilege	1976	vbc.exe
Token: SeChangeNotifyPrivilege	1976	vbc.exe
Token: SeRemoteShutdownPrivilege	1976	vbc.exe
Token: SeUndockPrivilege	1976	vbc.exe
Token: SeManageVolumePrivilege	1976	vbc.exe
Token: SeImpersonatePrivilege	1976	vbc.exe
Token: SeCreateGlobalPrivilege	1976	vbc.exe
Token: 33	1976	vbc.exe
Token: 34	1976	vbc.exe
Token: 35	1976	vbc.exe
Token: 36	1976	vbc.exe
Token: SeRestorePrivilege	3648	dw20.exe
Token: SeBackupPrivilege	3648	dw20.exe
Token: SeBackupPrivilege	3648	dw20.exe
Token: SeBackupPrivilege	3648	dw20.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
3876	NYANCATPROGRESSBAR.EXE
3876	NYANCATPROGRESSBAR.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
3876	NYANCATPROGRESSBAR.EXE
3876	NYANCATPROGRESSBAR.EXE

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
1976	vbc.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 680 wrote to memory of 1976	680	469d1452595615730bcc748044fd420b_JaffaCakes118.exe	86
PID 1976 wrote to memory of 4108	1976	vbc.exe	87
PID 1976 wrote to memory of 4108	1976	vbc.exe	87
PID 1976 wrote to memory of 4108	1976	vbc.exe	87
PID 1976 wrote to memory of 3876	1976	vbc.exe	89
PID 1976 wrote to memory of 3876	1976	vbc.exe	89
PID 1976 wrote to memory of 3876	1976	vbc.exe	89
PID 4108 wrote to memory of 1460	4108	cmd.exe	90
PID 4108 wrote to memory of 1460	4108	cmd.exe	90
PID 4108 wrote to memory of 1460	4108	cmd.exe	90
PID 3876 wrote to memory of 3648	3876	NYANCATPROGRESSBAR.EXE	91
PID 3876 wrote to memory of 3648	3876	NYANCATPROGRESSBAR.EXE	91
PID 3876 wrote to memory of 3648	3876	NYANCATPROGRESSBAR.EXE	91

Views/modifies file attributes 1 TTPs 1 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
1460	attrib.exe

C:\Users\Admin\AppData\Local\Temp\469d1452595615730bcc748044fd420b_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\469d1452595615730bcc748044fd420b_JaffaCakes118.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:680
- C:\Users\Admin\AppData\Local\Temp\vbc.exe
  C:\Users\Admin\AppData\Local\Temp\vbc.exe
  2⤵
  - Checks computer location settings
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:1976
- - C:\Windows\SysWOW64\cmd.exe
    C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
    3⤵
    - Suspicious use of WriteProcessMemory
    PID:4108
  - - C:\Windows\SysWOW64\attrib.exe
      attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
      4⤵
      Sets file to hidden
      Views/modifies file attributes
      PID:1460
- - C:\Users\Admin\AppData\Local\Temp\NYANCATPROGRESSBAR.EXE
    "C:\Users\Admin\AppData\Local\Temp\NYANCATPROGRESSBAR.EXE"
    3⤵
    - Executes dropped EXE
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    - Suspicious use of WriteProcessMemory
    PID:3876
  - - C:\Windows\Microsoft.NET\Framework\v2.0.50727\dw20.exe
      dw20.exe -x -s 1316
      4⤵
      Checks processor information in registry
      Enumerates system info in registry
      Suspicious use of AdjustPrivilegeToken
      PID:3648

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scripting

T1064

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

NYANCATPROGRESSBAR.EXE

Path C:\Users\Admin\AppData\Local\Temp\NYANCATPROGRESSBAR.EXE
Size 240KB
SHA256 d875051e9a156a2b4483b28abb0717a0ea3553232fb14627755b554cd42110e8
MD5 b3e78ffc23454afcd8389d1614ede99b
SHA1 b52e2ca05e9bd970798c6fa04a1a26573d86a0a7
SHA512 4c37cb0080790b34197794a8dc7c603b4f398f10ac8b6c06092575a83af69b31ac9ae2d2bf221e00a9924da20110e295942ad024d601cea0db16be5f9177940b
SSDEEP 6144:W1TH+Is1ZRAm1ZloaDama0w/5O8u9dbCGAtaFlw:EHMDfw/5ORmfEFlw
MD5 SHA1 SHA512 SSDEEP

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tmpcmd.bat

Path C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat
Size 50B
SHA256 adaf4a84b41e410b02e261cfd0fe7739d98647eab73c3badd32ac6e39f26351b
MD5 b774ae3fb1da087e1f83b4f7b2060e5a
SHA1 97eb9be49ac3af9c851c9e1e84e32bfd53e325a8
SHA512 f75d0f95f7306d26a12b414bfe37b97fbd37546cb3c6e403def7077329ddffb4b45d5c5f0ba0e7bb6d72851d2d691b0a85267beead42f7cbf2e8c3d45a3b4701
MD5 SHA1 SHA512

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vbc.exe

Path C:\Users\Admin\AppData\Local\Temp\vbc.exe
Size 1.1MB
SHA256 b3a37093609f9a20ad60b85a9fa9de2ba674cba9b5bd687729440c70ba619ca0
MD5 d881de17aa8f2e2c08cbb7b265f928f9
SHA1 08936aebc87decf0af6e8eada191062b5e65ac2a
SHA512 5f23bfb1b8740247b36ed0ab741738c7d4c949736129e767213e321607d1ccd3e3a8428e4ba44bd28a275b5e3f6206285b1a522514b7ef7ea5e698d90a713d34
SSDEEP 24576:jp2silPBMIXGWClfuRcUGIJYK15Qs/QZM:jp2sMO7VzUTJH15QFZM
MD5 SHA1 SHA512 SSDEEP

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memory/680-1-0x0000000075550000-0x0000000075B01000-memory.dmp

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memory/680-2-0x0000000075550000-0x0000000075B01000-memory.dmp

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memory/680-29-0x0000000075550000-0x0000000075B01000-memory.dmp

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memory/680-0-0x0000000075552000-0x0000000075553000-memory.dmp

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memory/1976-14-0x0000000000400000-0x00000000004FF000-memory.dmp

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memory/1976-38-0x0000000000400000-0x00000000004FF000-memory.dmp

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memory/1976-55-0x0000000000400000-0x00000000004FF000-memory.dmp

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memory/1976-53-0x0000000000400000-0x00000000004FF000-memory.dmp

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memory/1976-30-0x0000000002300000-0x0000000002301000-memory.dmp

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memory/1976-11-0x0000000000400000-0x00000000004FF000-memory.dmp

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memory/1976-49-0x0000000000400000-0x00000000004FF000-memory.dmp

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memory/1976-7-0x0000000000400000-0x00000000004FF000-memory.dmp

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memory/1976-35-0x0000000000400000-0x00000000004FF000-memory.dmp

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memory/1976-12-0x0000000000400000-0x00000000004FF000-memory.dmp

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memory/1976-37-0x0000000000400000-0x00000000004FF000-memory.dmp

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memory/1976-36-0x0000000000400000-0x00000000004FF000-memory.dmp

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memory/1976-47-0x0000000000400000-0x00000000004FF000-memory.dmp

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memory/3876-46-0x0000000075550000-0x0000000075B01000-memory.dmp

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memory/3876-33-0x0000000075550000-0x0000000075B01000-memory.dmp

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memory/3876-32-0x0000000075550000-0x0000000075B01000-memory.dmp

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memory/3876-31-0x0000000075552000-0x0000000075553000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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