darkcomet | 9523ea87951cf7dd0807aae1e82a3b18c1c5646e52c3f14aed07a2618911c505

General

Target

f99a217bed4ac0f4f0e6a4847793ac16_JaffaCakes118.exe
Size

595KB
MD5

f99a217bed4ac0f4f0e6a4847793ac16
SHA1

7dba26d2354716018a24dc9a7c52384e13010441
SHA256

9523ea87951cf7dd0807aae1e82a3b18c1c5646e52c3f14aed07a2618911c505
SHA512

1a467a4fb9d99e8a1f2304922dc78e94879c93e5b73250220f74c02bd7f9667980f013ad792385a5bab6cac159bf83bcec7c5fadc9f34d0c2056442837f6307b
SSDEEP

12288:6evmuaHs5RKWuKqMIuiQVWwjXC0rBk/aKidF7A7ePhsoS:6e+7opuKqWBXC09GfcJAqJ

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

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-1-5-21-2437139445-1151884604-3026847218-1000\Control Panel\International\Geo\Nation	f99a217bed4ac0f4f0e6a4847793ac16_JaffaCakes118.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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\$peer = "C:\\Windows\\TheBat.bat"	reg.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral2/memory/4864-0-0x0000000000400000-0x0000000000536000-memory.dmp	upx
behavioral2/memory/4864-47-0x0000000000400000-0x0000000000536000-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 9 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net1.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f99a217bed4ac0f4f0e6a4847793ac16_JaffaCakes118.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	label.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	net.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	rundll32.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	reg.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	label.exe

Runs net.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: SeSystemtimePrivilege	828	cmd.exe
Token: SeSystemtimePrivilege	828	cmd.exe
Token: SeSystemtimePrivilege	828	cmd.exe
Token: SeSystemtimePrivilege	828	cmd.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 4864 wrote to memory of 828	4864	f99a217bed4ac0f4f0e6a4847793ac16_JaffaCakes118.exe	83
PID 4864 wrote to memory of 828	4864	f99a217bed4ac0f4f0e6a4847793ac16_JaffaCakes118.exe	83
PID 4864 wrote to memory of 828	4864	f99a217bed4ac0f4f0e6a4847793ac16_JaffaCakes118.exe	83
PID 828 wrote to memory of 2688	828	cmd.exe	86
PID 828 wrote to memory of 2688	828	cmd.exe	86
PID 828 wrote to memory of 2688	828	cmd.exe	86
PID 828 wrote to memory of 3972	828	cmd.exe	87
PID 828 wrote to memory of 3972	828	cmd.exe	87
PID 828 wrote to memory of 3972	828	cmd.exe	87
PID 828 wrote to memory of 3836	828	cmd.exe	90
PID 828 wrote to memory of 3836	828	cmd.exe	90
PID 828 wrote to memory of 3836	828	cmd.exe	90
PID 3836 wrote to memory of 2736	3836	net.exe	91
PID 3836 wrote to memory of 2736	3836	net.exe	91
PID 3836 wrote to memory of 2736	3836	net.exe	91
PID 828 wrote to memory of 2956	828	cmd.exe	92
PID 828 wrote to memory of 2956	828	cmd.exe	92
PID 828 wrote to memory of 2956	828	cmd.exe	92
PID 828 wrote to memory of 4012	828	cmd.exe	93
PID 828 wrote to memory of 4012	828	cmd.exe	93
PID 828 wrote to memory of 4012	828	cmd.exe	93
PID 828 wrote to memory of 4256	828	cmd.exe	95
PID 828 wrote to memory of 4256	828	cmd.exe	95
PID 828 wrote to memory of 4256	828	cmd.exe	95

C:\Users\Admin\AppData\Local\Temp\f99a217bed4ac0f4f0e6a4847793ac16_JaffaCakes118.exe
"C:\Users\Admin\AppData\Local\Temp\f99a217bed4ac0f4f0e6a4847793ac16_JaffaCakes118.exe"
1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4864
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\B1BC.tmp\NemesisProjek.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:828
- - C:\Windows\SysWOW64\reg.exe
    REG ADD "HKEY_LOCAL_MACHINE\software\microsoft\windows\currentversion\run" /f /v "$peer" /t "REG_SZ" /d "C:\Windows\TheBat.bat"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    PID:2688
- - C:\Windows\SysWOW64\label.exe
    Label NemesisProjek
    3⤵
    - System Location Discovery: System Language Discovery
    - Enumerates system info in registry
    PID:3972
- - C:\Windows\SysWOW64\net.exe
    net user "Admin" "swordfish"
    3⤵
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:3836
  - - C:\Windows\SysWOW64\net1.exe
      C:\Windows\system32\net1 user "Admin" "swordfish"
      4⤵
      System Location Discovery: System Language Discovery
      PID:2736
- - C:\Windows\SysWOW64\rundll32.exe
    RUNDLL32.EXE USER32.DLL,SwapMouseButton
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2956
- - C:\Windows\SysWOW64\cmd.exe
    cmd.exe
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4012
- - C:\Windows\SysWOW64\reg.exe
    reg delete "HKEY_LOCAL_MACHINE\system\CurrentControlSet\Services\Mouclass"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:4256

C:\Windows\system32\rundll32.exe
C:\Windows\system32\rundll32.exe C:\Windows\system32\PcaSvc.dll,PcaPatchSdbTask
1⤵
PID:2016

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

3

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\B1BC.tmp\NemesisProjek.bat

Filesize
6KB

MD5
fc129792a8e512e6d1565af6a825a376

SHA1
e731c89647db7d16d1ec14bcd8aa3419a40b6dbe

SHA256
eb9ebbb4f6ec3a398718c513b931fb535cb954ee6a2e407d156e8b82b56e2b76

SHA512
9c0409b88c9ae7d48b0aec14eca931c0f75dfffa26a7850a66dd8e3163cfe7a0d193536813dd7c15e59ec220502a188e3277acb5630c222d8f8fd6b8771625fc

Download Submit
memory/4864-0-0x0000000000400000-0x0000000000536000-memory.dmp

Filesize
1.2MB

Download
memory/4864-47-0x0000000000400000-0x0000000000536000-memory.dmp

Filesize
1.2MB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads