darkcomet | 76ad742cdd3171559091f30f6483e23e3635c8b25e4edfa6b557ec92914502a5

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
16-01-2025 12:34

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General

Target

JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe
Size

1.3MB
MD5

766960724e07eb982c982fc86a1141c2
SHA1

e481922d7fdec7634229d4c772136329173f238f
SHA256

76ad742cdd3171559091f30f6483e23e3635c8b25e4edfa6b557ec92914502a5
SHA512

dbfdecdb9e47014ad7da5008f5387a50909b6415520ab1c84a62fec64fce0b672a2250f81124bd586e1b8e7be874c3fb375adb4ebe4bcd1b0cac5e36896f791c
SSDEEP

24576:7eMXpgE2fp4KTdekeMXpgE2fp4KTde0YqoWfVeRhLh7hesvzRkoW:NXtsPXtsVYjWfWhLh7hVbRlW

Score

10^/10

darkcomet latentbot discovery persistence rat trojan upx

Malware Config

Extracted

Family

latentbot

gniewkowiec0359.zapto.org

Signatures

Darkcomet
DarkComet is a remote access trojan (RAT) developed by Jean-Pierre Lesueur.
trojan rat darkcomet
Darkcomet family
darkcomet
LatentBot
Modular trojan written in Delphi which has been in-the-wild since 2013.
trojan latentbot
Latentbot family
latentbot

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:\\Windows\\system32\\Windupdt\\winupdate.exe"	hhh.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	hhh.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosDate	explorer.exe

Executes dropped EXE 2 IoCs

pid	Process
996	process32.exe
5116	hhh.exe

Adds Run key to start application 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\doVjiNdvyt = "\"C:\\Users\\Admin\\AppData\\Local\\Temp\\tempfile.exe\""	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\winupdate.exe"	hhh.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\winupdater = "C:\\Windows\\system32\\Windupdt\\winupdate.exe"	notepad.exe

Drops file in System32 directory 4 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\Windupdt\winupdate.exe	hhh.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\winupdate.exe	hhh.exe
File opened for modification	C:\Windows\SysWOW64\Windupdt\	hhh.exe
File created	C:\Windows\SysWOW64\Windupdt\winupdate.exe	notepad.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2796 set thread context of 996	2796	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe	84
PID 5116 set thread context of 3996	5116	hhh.exe	90

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral2/memory/996-5-0x0000000013140000-0x000000001320B000-memory.dmp	upx
behavioral2/files/0x000c000000023b5f-10.dat	upx
behavioral2/memory/5116-12-0x0000000013140000-0x000000001320B000-memory.dmp	upx
behavioral2/memory/5116-22-0x0000000013140000-0x000000001320B000-memory.dmp	upx
behavioral2/memory/3996-23-0x0000000013140000-0x000000001320B000-memory.dmp	upx
behavioral2/memory/3996-26-0x0000000013140000-0x000000001320B000-memory.dmp	upx
behavioral2/memory/3996-24-0x0000000013140000-0x000000001320B000-memory.dmp	upx
behavioral2/memory/3996-29-0x0000000013140000-0x000000001320B000-memory.dmp	upx
behavioral2/memory/3996-28-0x0000000013140000-0x000000001320B000-memory.dmp	upx
behavioral2/memory/3996-25-0x0000000013140000-0x000000001320B000-memory.dmp	upx
behavioral2/memory/3996-31-0x0000000013140000-0x000000001320B000-memory.dmp	upx

Program crash 1 IoCs

pid	pid_target	Process	procid_target
4652	996	WerFault.exe	84

System Location Discovery: System Language Discovery 1 TTPs 6 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	explorer.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hhh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.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 opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	explorer.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
Key opened	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0	hhh.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	hhh.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\Identifier	hhh.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\VendorIdentifier	hhh.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	hhh.exe
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	explorer.exe

Suspicious use of AdjustPrivilegeToken 49 IoCs

description	pid	Process
Token: SeDebugPrivilege	2796	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe
Token: SeIncreaseQuotaPrivilege	5116	hhh.exe
Token: SeSecurityPrivilege	5116	hhh.exe
Token: SeTakeOwnershipPrivilege	5116	hhh.exe
Token: SeLoadDriverPrivilege	5116	hhh.exe
Token: SeSystemProfilePrivilege	5116	hhh.exe
Token: SeSystemtimePrivilege	5116	hhh.exe
Token: SeProfSingleProcessPrivilege	5116	hhh.exe
Token: SeIncBasePriorityPrivilege	5116	hhh.exe
Token: SeCreatePagefilePrivilege	5116	hhh.exe
Token: SeBackupPrivilege	5116	hhh.exe
Token: SeRestorePrivilege	5116	hhh.exe
Token: SeShutdownPrivilege	5116	hhh.exe
Token: SeDebugPrivilege	5116	hhh.exe
Token: SeSystemEnvironmentPrivilege	5116	hhh.exe
Token: SeChangeNotifyPrivilege	5116	hhh.exe
Token: SeRemoteShutdownPrivilege	5116	hhh.exe
Token: SeUndockPrivilege	5116	hhh.exe
Token: SeManageVolumePrivilege	5116	hhh.exe
Token: SeImpersonatePrivilege	5116	hhh.exe
Token: SeCreateGlobalPrivilege	5116	hhh.exe
Token: 33	5116	hhh.exe
Token: 34	5116	hhh.exe
Token: 35	5116	hhh.exe
Token: 36	5116	hhh.exe
Token: SeIncreaseQuotaPrivilege	3996	explorer.exe
Token: SeSecurityPrivilege	3996	explorer.exe
Token: SeTakeOwnershipPrivilege	3996	explorer.exe
Token: SeLoadDriverPrivilege	3996	explorer.exe
Token: SeSystemProfilePrivilege	3996	explorer.exe
Token: SeSystemtimePrivilege	3996	explorer.exe
Token: SeProfSingleProcessPrivilege	3996	explorer.exe
Token: SeIncBasePriorityPrivilege	3996	explorer.exe
Token: SeCreatePagefilePrivilege	3996	explorer.exe
Token: SeBackupPrivilege	3996	explorer.exe
Token: SeRestorePrivilege	3996	explorer.exe
Token: SeShutdownPrivilege	3996	explorer.exe
Token: SeDebugPrivilege	3996	explorer.exe
Token: SeSystemEnvironmentPrivilege	3996	explorer.exe
Token: SeChangeNotifyPrivilege	3996	explorer.exe
Token: SeRemoteShutdownPrivilege	3996	explorer.exe
Token: SeUndockPrivilege	3996	explorer.exe
Token: SeManageVolumePrivilege	3996	explorer.exe
Token: SeImpersonatePrivilege	3996	explorer.exe
Token: SeCreateGlobalPrivilege	3996	explorer.exe
Token: 33	3996	explorer.exe
Token: 34	3996	explorer.exe
Token: 35	3996	explorer.exe
Token: 36	3996	explorer.exe

Suspicious use of WriteProcessMemory 64 IoCs

description	pid	Process	procid_target
PID 2796 wrote to memory of 996	2796	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe	84
PID 2796 wrote to memory of 996	2796	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe	84
PID 2796 wrote to memory of 996	2796	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe	84
PID 2796 wrote to memory of 996	2796	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe	84
PID 2796 wrote to memory of 996	2796	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe	84
PID 2796 wrote to memory of 996	2796	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe	84
PID 2796 wrote to memory of 996	2796	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe	84
PID 2796 wrote to memory of 996	2796	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe	84
PID 2796 wrote to memory of 5116	2796	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe	87
PID 2796 wrote to memory of 5116	2796	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe	87
PID 2796 wrote to memory of 5116	2796	JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe	87
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 4232	5116	hhh.exe	89
PID 5116 wrote to memory of 3996	5116	hhh.exe	90
PID 5116 wrote to memory of 3996	5116	hhh.exe	90
PID 5116 wrote to memory of 3996	5116	hhh.exe	90
PID 5116 wrote to memory of 3996	5116	hhh.exe	90
PID 5116 wrote to memory of 3996	5116	hhh.exe	90
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 5116 wrote to memory of 3748	5116	hhh.exe	91
PID 3996 wrote to memory of 224	3996	explorer.exe	92
PID 3996 wrote to memory of 224	3996	explorer.exe	92
PID 3996 wrote to memory of 224	3996	explorer.exe	92
PID 3996 wrote to memory of 224	3996	explorer.exe	92
PID 3996 wrote to memory of 224	3996	explorer.exe	92
PID 3996 wrote to memory of 224	3996	explorer.exe	92
PID 3996 wrote to memory of 224	3996	explorer.exe	92
PID 3996 wrote to memory of 224	3996	explorer.exe	92

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_766960724e07eb982c982fc86a1141c2.exe"
1⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2796
- C:\Users\Admin\AppData\Local\Temp\process32.exe
  C:\Users\Admin\AppData\Local\Temp\\process32.exe
  2⤵
  - Executes dropped EXE
  PID:996
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 996 -s 12
    3⤵
    - Program crash
    PID:4652
- C:\Users\Admin\AppData\Local\Temp\hhh.exe
  C:\Users\Admin\AppData\Local\Temp\hhh.exe
  2⤵
  - Modifies WinLogon for persistence
  - Checks BIOS information in registry
  - Executes dropped EXE
  - Adds Run key to start application
  - Drops file in System32 directory
  - 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:5116
- - C:\Windows\SysWOW64\notepad.exe
    notepad
    3⤵
    - Adds Run key to start application
    - Drops file in System32 directory
    - System Location Discovery: System Language Discovery
    PID:4232
- - C:\Windows\SysWOW64\explorer.exe
    "C:\Windows\SysWOW64\explorer.exe"
    3⤵
    - 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
    - Suspicious use of WriteProcessMemory
    PID:3996
  - - C:\Windows\SysWOW64\notepad.exe
      C:\Windows\SysWOW64\notepad.exe
      4⤵
      System Location Discovery: System Language Discovery
      PID:224
- - C:\Windows\SysWOW64\notepad.exe
    C:\Windows\SysWOW64\notepad.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:3748

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 996 -ip 996
1⤵
PID:2364

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

C:\Users\Admin\AppData\Local\Temp\hhh.exe

Filesize
274KB

MD5
1bd5b521443633b8022bc75e23f47a61

SHA1
20297fa9caf8d15fbc1ca79c03bafa33835c8aa8

SHA256
2d1e1a867d9dc6eda0622ca6bc8ff630400afd5bd7b3fc1a6535b6f3db63cb35

SHA512
8dab963177341974d9cc81ebfe4ef16cb47443397d34f5727d99409c6748d75a7e0d766f6a42415a9496eb031afb90f17a5a4d24185a01d544bc7aee1166c8b1

Download Submit
C:\Users\Admin\AppData\Local\Temp\process32.exe

Filesize
5KB

MD5
d2ed8fa3208e702b7d61728af768eed1

SHA1
54094aa272cb866a46c2ca5b56f4a094e0f48ffb

SHA256
9236208e312b2f47a0ef40e59fc0f364fc8e401717e1e46555c26bec8ab3de1f

SHA512
42442dc0b98f2abaea0c6516602d80df8a2a680278ecdc2b96fe5ce44685f7442347fd4ad13d9d99e0330cf0be7c0e9bbf22bd78c0173066221e430203c76313

Download Submit
memory/224-27-0x0000000000F70000-0x0000000000F71000-memory.dmp

Filesize
4KB

Download
memory/996-5-0x0000000013140000-0x000000001320B000-memory.dmp

Filesize
812KB

Download
memory/2796-0-0x0000000075392000-0x0000000075393000-memory.dmp

Filesize
4KB

Download
memory/2796-1-0x0000000075390000-0x0000000075941000-memory.dmp

Filesize
5.7MB

Download
memory/2796-2-0x0000000075390000-0x0000000075941000-memory.dmp

Filesize
5.7MB

Download
memory/2796-19-0x0000000075390000-0x0000000075941000-memory.dmp

Filesize
5.7MB

Download
memory/3748-21-0x00000000010C0000-0x00000000010C1000-memory.dmp

Filesize
4KB

Download
memory/3996-23-0x0000000013140000-0x000000001320B000-memory.dmp

Filesize
812KB

Download
memory/3996-26-0x0000000013140000-0x000000001320B000-memory.dmp

Filesize
812KB

Download
memory/3996-24-0x0000000013140000-0x000000001320B000-memory.dmp

Filesize
812KB

Download
memory/3996-29-0x0000000013140000-0x000000001320B000-memory.dmp

Filesize
812KB

Download
memory/3996-28-0x0000000013140000-0x000000001320B000-memory.dmp

Filesize
812KB

Download
memory/3996-25-0x0000000013140000-0x000000001320B000-memory.dmp

Filesize
812KB

Download
memory/3996-31-0x0000000013140000-0x000000001320B000-memory.dmp

Filesize
812KB

Download
memory/4232-16-0x0000000000D60000-0x0000000000D61000-memory.dmp

Filesize
4KB

Download
memory/5116-22-0x0000000013140000-0x000000001320B000-memory.dmp

Filesize
812KB

Download
memory/5116-14-0x0000000000A50000-0x0000000000A51000-memory.dmp

Filesize
4KB

Download
memory/5116-12-0x0000000013140000-0x000000001320B000-memory.dmp

Filesize
812KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads