darkcomet | 75fbe73bb77ba570054ef65d449d4159001e1f9c3374c8ce9dd79654e5819b05

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
27-11-2024 09:08

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General

Target

a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Size

690KB
MD5

a70d7083f7c78d14bcfab1ba8d3a61bc
SHA1

2e2affc3dd9150e8f982ba5f257fcac21df99510
SHA256

75fbe73bb77ba570054ef65d449d4159001e1f9c3374c8ce9dd79654e5819b05
SHA512

fe100f75c2716f6e1304413242b2c751d6acb6dc3df406c948a7a22fdf2434ef2bde579666338f5277b5433c2569c1ee46efb68a59a7a555cb370abdf03d52ff
SSDEEP

12288:LkHcpSHY7VSrfT2/czO3HPGMxwcMTdBZjhEWNQIRuPUJhqfGYx8v4l2:o8uYxSrDzwvt2cqdLhDNQiXJ+GE8

Score

10^/10

darkcomet discovery persistence rat trojan upx

Malware Config

Signatures

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

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1547.004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon\UserInit = "C:\\Windows\\system32\\userinit.exe,C:\\Users\\Admin\\AppData\\Roaming\\IExplorer\\ielowutil.exe"	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS 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\SystemBiosDate	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ielowutil.exe = "C:\\Users\\Admin\\AppData\\Roaming\\IExplorer\\ielowutil.exe"	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4050598569-1597076380-177084960-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\ielowutil.exe = "C:\\Users\\Admin\\AppData\\Roaming\\IExplorer\\ielowutil.exe"	notepad.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 4948 set thread context of 2440	4948	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	87
PID 2440 set thread context of 4728	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	91

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2440-1-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/2440-2-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/2440-4-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/2440-6-0x0000000013140000-0x00000000131FC000-memory.dmp	upx
behavioral2/memory/2440-5-0x0000000013140000-0x00000000131FC000-memory.dmp	upx

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 4 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Checks processor information in registry 2 TTPs 4 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\ProcessorNameString	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeSecurityPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeTakeOwnershipPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeLoadDriverPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeSystemProfilePrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeSystemtimePrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeProfSingleProcessPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeIncBasePriorityPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeCreatePagefilePrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeBackupPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeRestorePrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeShutdownPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeDebugPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeSystemEnvironmentPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeChangeNotifyPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeRemoteShutdownPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeUndockPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeManageVolumePrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeImpersonatePrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: SeCreateGlobalPrivilege	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: 33	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: 34	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: 35	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
Token: 36	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe

Suspicious use of WriteProcessMemory 36 IoCs

description	pid	Process	procid_target
PID 4948 wrote to memory of 2440	4948	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	87
PID 4948 wrote to memory of 2440	4948	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	87
PID 4948 wrote to memory of 2440	4948	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	87
PID 4948 wrote to memory of 2440	4948	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	87
PID 4948 wrote to memory of 2440	4948	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	87
PID 4948 wrote to memory of 2440	4948	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	87
PID 4948 wrote to memory of 2440	4948	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	87
PID 4948 wrote to memory of 2440	4948	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	87
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4180	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	90
PID 2440 wrote to memory of 4728	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	91
PID 2440 wrote to memory of 4728	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	91
PID 2440 wrote to memory of 4728	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	91
PID 2440 wrote to memory of 4728	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	91
PID 2440 wrote to memory of 4728	2440	a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe	91

C:\Users\Admin\AppData\Local\Temp\a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe"
1⤵
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4948
- C:\Users\Admin\AppData\Local\Temp\a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe
  "C:\Users\Admin\AppData\Local\Temp\a70d7083f7c78d14bcfab1ba8d3a61bc_JaffaCakes118.exe"
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Adds Run key to start application
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2440
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:4180
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4728

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Winlogon Helper DLL

T1547.004

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/2440-7-0x00000000006A0000-0x00000000006A1000-memory.dmp

Filesize
4KB

Download
memory/2440-1-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2440-2-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2440-4-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2440-6-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/2440-5-0x0000000013140000-0x00000000131FC000-memory.dmp

Filesize
752KB

Download
memory/4180-9-0x0000000001000000-0x0000000001001000-memory.dmp

Filesize
4KB

Download
memory/4728-12-0x0000000000010000-0x0000000000085000-memory.dmp

Filesize
468KB

Download
memory/4728-14-0x0000000000010000-0x0000000000085000-memory.dmp

Filesize
468KB

Download
memory/4728-15-0x0000000000010000-0x0000000000085000-memory.dmp

Filesize
468KB

Download
memory/4728-13-0x0000000000010000-0x0000000000085000-memory.dmp

Filesize
468KB

Download
memory/4728-16-0x0000000002500000-0x0000000002501000-memory.dmp

Filesize
4KB

Download
memory/4728-17-0x0000000000010000-0x0000000000085000-memory.dmp

Filesize
468KB

Download
memory/4948-3-0x0000000000010000-0x0000000000085000-memory.dmp

Filesize
468KB

Download
memory/4948-0-0x0000000000580000-0x0000000000581000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads