darkcomet | 6245fb1e910ebb1907076cc70d35c9de45a9554470459a7763536ece4f7088ec

Analysis

max time kernel
150s
max time network
122s
platform
windows7_x64
resource
win7-20241010-en
resource tags

arch:x64arch:x86image:win7-20241010-enlocale:en-usos:windows7-x64system
submitted
16/03/2025, 18:28

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General

Target

JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Size

233KB
MD5

7b48b4e633304c78ddda3457eb050e5d
SHA1

dfe210e81f3a5a2f90946768454ab1b67de8d052
SHA256

6245fb1e910ebb1907076cc70d35c9de45a9554470459a7763536ece4f7088ec
SHA512

ec3afd57a1d0aa159813987f82a20aeca6336b8ee7cf98c851d2e7a14d0d676ee803072d407f632d9b9e9450b3af843af725bd0697828bda821431e4a49996a7
SSDEEP

6144:54CFfifD2gVKVTQQ249HZ52KTh9XKOCgLJacj5/AZtRsL:5Xgr8VMQDT52WXKq9fj5/AZjU

Score

10^/10

darkcomet guest16 discovery persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

Guest16

snarglozog.zapto.org:32897

Mutex

DC_MUTEX-SVHWYMW

Attributes

InstallPath
sys\sysupdt.exe
gencode
swn6qBbDLcVC
install
true
offline_keylogger
false
password
pauls0212
persistence
true
reg_key
sysupdt

rc4.plain

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\\sys\\sysupdt.exe"	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe

Checks BIOS information in registry 2 TTPs 2 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	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe

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-1-5-21-3692679935-4019334568-335155002-1000\Software\Microsoft\Windows\CurrentVersion\Run\sysupdt = "C:\\Users\\Admin\\AppData\\Roaming\\sys\\sysupdt.exe"	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2776 set thread context of 2836	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe	30

UPX packed file 12 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2776-0-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2836-13-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2836-14-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2836-12-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2836-11-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2776-10-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2836-8-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2836-16-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2836-17-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2836-19-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2836-18-0x0000000000400000-0x00000000004B5000-memory.dmp	upx
behavioral1/memory/2836-20-0x0000000000400000-0x00000000004B5000-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 2 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	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	explorer.exe

Checks processor information in registry 2 TTPs 8 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	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.exe
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	explorer.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	explorer.exe

Enumerates system info in registry 2 TTPs 2 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 46 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeSecurityPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeTakeOwnershipPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeLoadDriverPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeSystemProfilePrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeSystemtimePrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeProfSingleProcessPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeIncBasePriorityPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeCreatePagefilePrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeBackupPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeRestorePrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeShutdownPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeDebugPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeSystemEnvironmentPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeChangeNotifyPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeRemoteShutdownPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeUndockPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeManageVolumePrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeImpersonatePrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeCreateGlobalPrivilege	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: 33	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: 34	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: 35	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
Token: SeIncreaseQuotaPrivilege	2836	explorer.exe
Token: SeSecurityPrivilege	2836	explorer.exe
Token: SeTakeOwnershipPrivilege	2836	explorer.exe
Token: SeLoadDriverPrivilege	2836	explorer.exe
Token: SeSystemProfilePrivilege	2836	explorer.exe
Token: SeSystemtimePrivilege	2836	explorer.exe
Token: SeProfSingleProcessPrivilege	2836	explorer.exe
Token: SeIncBasePriorityPrivilege	2836	explorer.exe
Token: SeCreatePagefilePrivilege	2836	explorer.exe
Token: SeBackupPrivilege	2836	explorer.exe
Token: SeRestorePrivilege	2836	explorer.exe
Token: SeShutdownPrivilege	2836	explorer.exe
Token: SeDebugPrivilege	2836	explorer.exe
Token: SeSystemEnvironmentPrivilege	2836	explorer.exe
Token: SeChangeNotifyPrivilege	2836	explorer.exe
Token: SeRemoteShutdownPrivilege	2836	explorer.exe
Token: SeUndockPrivilege	2836	explorer.exe
Token: SeManageVolumePrivilege	2836	explorer.exe
Token: SeImpersonatePrivilege	2836	explorer.exe
Token: SeCreateGlobalPrivilege	2836	explorer.exe
Token: 33	2836	explorer.exe
Token: 34	2836	explorer.exe
Token: 35	2836	explorer.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2776 wrote to memory of 2836	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe	30
PID 2776 wrote to memory of 2836	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe	30
PID 2776 wrote to memory of 2836	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe	30
PID 2776 wrote to memory of 2836	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe	30
PID 2776 wrote to memory of 2836	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe	30
PID 2776 wrote to memory of 2836	2776	JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe	30

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_7b48b4e633304c78ddda3457eb050e5d.exe"
1⤵
- 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:2776
- C:\Windows\SysWOW64\explorer.exe
  "C:\Windows\SysWOW64\explorer.exe"
  2⤵
  - Checks BIOS information in registry
  - System Location Discovery: System Language Discovery
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious use of AdjustPrivilegeToken
  PID:2836

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/2776-0-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2776-1-0x0000000000250000-0x0000000000251000-memory.dmp

Filesize
4KB

Download
memory/2776-10-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2836-14-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2836-13-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2836-12-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2836-15-0x00000000001F0000-0x00000000001F1000-memory.dmp

Filesize
4KB

Download
memory/2836-11-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2836-5-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2836-8-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2836-6-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2836-16-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2836-17-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2836-19-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2836-18-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download
memory/2836-20-0x0000000000400000-0x00000000004B5000-memory.dmp

Filesize
724KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads