darkcomet | 5938462ee18d19cf21ffd6a9850325f2413eee04747903e8a3563148b14b3227

General

Target

JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Size

301KB
MD5

77c4ad9fa0364411adf59f27ab28bc56
SHA1

c09d1b976fc047e9a605e476bc8f605123654fbf
SHA256

5938462ee18d19cf21ffd6a9850325f2413eee04747903e8a3563148b14b3227
SHA512

66f7f3d1b59ff7d940a8bc95ddba491913a1cd7efeabf57d5e3df6f2e4991ba8837b77c9dab461318555f5c0abbe40fe64e2a36f998168aa59a54cfd799b875c
SSDEEP

6144:xbaepOgEy+AT5JPPiFrF6UTcz/DJZoAwDuRS/xrgvVMJ5b:9a2dEy+ATrPiFXEJZoAwDuigv

Score

10^/10

darkcomet discovery evasion rat trojan

Malware Config

Signatures

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

Modifies firewall policy service 3 TTPs 3 IoCs

evasion

Modify Registry

T1112

Windows Service

T1543.003

Disable or Modify System Firewall

T1562.004

description	ioc	Process
Key created	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\EnableFirewall = "0"	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Set value (int)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\DisableNotifications = "0"	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe

Disables RegEdit via registry modification 1 IoCs

evasion

description	ioc	Process
Set value (int)	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\DisableRegistryTools = "1"	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe

Sets file to hidden 1 TTPs 2 IoCs

Modifies file attributes to stop it showing in Explorer etc.

evasion

Hidden Files and Directories

T1564.001

pid	Process
3452	attrib.exe
3776	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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3212	4308	WerFault.exe	82

System Location Discovery: System Language Discovery 1 TTPs 5 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_77c4ad9fa0364411adf59f27ab28bc56.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	attrib.exe

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	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString	WINWORD.EXE

Enumerates system info in registry 2 TTPs 3 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\BIOS	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily	WINWORD.EXE
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU	WINWORD.EXE

Modifies registry class 1 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\Local Settings	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe

Suspicious behavior: AddClipboardFormatListener 2 IoCs

pid	Process
4688	WINWORD.EXE
4688	WINWORD.EXE

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe

Suspicious use of AdjustPrivilegeToken 24 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeSecurityPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeTakeOwnershipPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeLoadDriverPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeSystemProfilePrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeSystemtimePrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeProfSingleProcessPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeIncBasePriorityPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeCreatePagefilePrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeBackupPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeRestorePrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeShutdownPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeDebugPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeSystemEnvironmentPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeChangeNotifyPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeRemoteShutdownPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeUndockPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeManageVolumePrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeImpersonatePrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: SeCreateGlobalPrivilege	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: 33	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: 34	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: 35	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
Token: 36	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe

Suspicious use of SetWindowsHookEx 8 IoCs

pid	Process
4688	WINWORD.EXE
4688	WINWORD.EXE
4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
4688	WINWORD.EXE
4688	WINWORD.EXE
4688	WINWORD.EXE
4688	WINWORD.EXE
4688	WINWORD.EXE

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 4308 wrote to memory of 1264	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe	86
PID 4308 wrote to memory of 1264	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe	86
PID 4308 wrote to memory of 1264	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe	86
PID 4308 wrote to memory of 4684	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe	88
PID 4308 wrote to memory of 4684	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe	88
PID 4308 wrote to memory of 4684	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe	88
PID 4308 wrote to memory of 4688	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe	90
PID 4308 wrote to memory of 4688	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe	90
PID 4684 wrote to memory of 3452	4684	cmd.exe	91
PID 4684 wrote to memory of 3452	4684	cmd.exe	91
PID 4684 wrote to memory of 3452	4684	cmd.exe	91
PID 1264 wrote to memory of 3776	1264	cmd.exe	92
PID 1264 wrote to memory of 3776	1264	cmd.exe	92
PID 1264 wrote to memory of 3776	1264	cmd.exe	92
PID 4308 wrote to memory of 4732	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe	94
PID 4308 wrote to memory of 4732	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe	94
PID 4308 wrote to memory of 4732	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe	94
PID 4308 wrote to memory of 3292	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe	95
PID 4308 wrote to memory of 3292	4308	JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe	95

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3452	attrib.exe
3776	attrib.exe

C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe
"C:\Users\Admin\AppData\Local\Temp\JaffaCakes118_77c4ad9fa0364411adf59f27ab28bc56.exe"
1⤵
- Modifies firewall policy service
- Disables RegEdit via registry modification
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Modifies registry class
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:4308
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 4308 -s 548
  2⤵
  - Program crash
  PID:3212
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1264
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:3776
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c ""C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat" "
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:4684
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:3452
- C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE
  "C:\Program Files\Microsoft Office\Root\Office16\WINWORD.EXE" /n "C:\Users\Admin\AppData\Local\Temp\NEUES RTF-DOKUMENT.RTF" /o ""
  2⤵
  - Checks processor information in registry
  - Enumerates system info in registry
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:4688
- C:\Program Files (x86)\Internet Explorer\iexplore.exe
  "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
  2⤵
  PID:4732
- C:\Windows\explorer.exe
  "C:\Windows\explorer.exe"
  2⤵
  PID:3292

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 424 -p 4308 -ip 4308
1⤵
PID:4904

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Privilege Escalation

Create or Modify System Process

1

T1543

Windows Service

1

T1543.003

Defense Evasion

Hide Artifacts

2

T1564

Hidden Files and Directories

2

T1564.001

Impair Defenses

1

T1562

Disable or Modify System Firewall

Modify Registry

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

4

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\NEUES RTF-DOKUMENT.RTF

Filesize
7B

MD5
8274425de767b30b2fff1124ab54abb5

SHA1
2201589aa3ed709b3665e4ff979e10c6ad5137fc

SHA256
0d6afb7e939f0936f40afdc759b5a354ea5427ec250a47e7b904ab1ea800a01d

SHA512
16f1647b22ca8679352e232c7dcbcdcba224c9b045c70e572bf061b2996f251cbd65a152557409f17be9417b23460adebe5de08d2dea30d13a64e22f6607206b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TCDB4F0.tmp\gb.xsl

Filesize
262KB

MD5
51d32ee5bc7ab811041f799652d26e04

SHA1
412193006aa3ef19e0a57e16acf86b830993024a

SHA256
6230814bf5b2d554397580613e20681752240ab87fd354ececf188c1eabe0e97

SHA512
5fc5d889b0c8e5ef464b76f0c4c9e61bda59b2d1205ac9417cc74d6e9f989fb73d78b4eb3044a1a1e1f2c00ce1ca1bd6d4d07eeadc4108c7b124867711c31810

Download Submit
C:\Users\Admin\AppData\Local\Temp\tmpcmd.bat

Filesize
50B

MD5
b774ae3fb1da087e1f83b4f7b2060e5a

SHA1
97eb9be49ac3af9c851c9e1e84e32bfd53e325a8

SHA256
adaf4a84b41e410b02e261cfd0fe7739d98647eab73c3badd32ac6e39f26351b

SHA512
f75d0f95f7306d26a12b414bfe37b97fbd37546cb3c6e403def7077329ddffb4b45d5c5f0ba0e7bb6d72851d2d691b0a85267beead42f7cbf2e8c3d45a3b4701

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\UProof\CUSTOM.DIC

Filesize
2B

MD5
f3b25701fe362ec84616a93a45ce9998

SHA1
d62636d8caec13f04e28442a0a6fa1afeb024bbb

SHA256
b3d510ef04275ca8e698e5b3cbb0ece3949ef9252f0cdc839e9ee347409a2209

SHA512
98c5f56f3de340690c139e58eb7dac111979f0d4dffe9c4b24ff849510f4b6ffa9fd608c0a3de9ac3c9fd2190f0efaf715309061490f9755a9bfdf1c54ca0d84

Download Submit
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\fb3b0dbfee58fac8.customDestinations-ms

Filesize
1KB

MD5
8516524a8302f75b6ac535ed98527d0a

SHA1
c734cb12ed397a3aa424a26ad3239bd88f5e123e

SHA256
a90354697fa72b5fd067e3e4261bc43aa37e3368298d0a27045ad7b51bfae63b

SHA512
f8ca0896de4651adabfad27451c91a3733785a31ce3acf8cd3ba26532bb6036c17be0e6034fe5da90b62a6f1a3401e4c9defd982d3051f04ed75d940d604dbaa

Download Submit
memory/4308-1-0x0000000002280000-0x0000000002281000-memory.dmp

Filesize
4KB

Download
memory/4308-176-0x0000000000400000-0x00000000004E1000-memory.dmp

Filesize
900KB

Download
memory/4308-48-0x0000000000400000-0x00000000004E1000-memory.dmp

Filesize
900KB

Download
memory/4308-0-0x0000000000400000-0x00000000004E1000-memory.dmp

Filesize
900KB

Download
memory/4308-39-0x0000000002280000-0x0000000002281000-memory.dmp

Filesize
4KB

Download
memory/4688-17-0x00007FFA2E870000-0x00007FFA2EA65000-memory.dmp

Filesize
2.0MB

Download
memory/4688-28-0x00007FF9EBF90000-0x00007FF9EBFA0000-memory.dmp

Filesize
64KB

Download
memory/4688-25-0x00007FFA2E870000-0x00007FFA2EA65000-memory.dmp

Filesize
2.0MB

Download
memory/4688-24-0x00007FFA2E870000-0x00007FFA2EA65000-memory.dmp

Filesize
2.0MB

Download
memory/4688-22-0x00007FFA2E870000-0x00007FFA2EA65000-memory.dmp

Filesize
2.0MB

Download
memory/4688-26-0x00007FFA2E870000-0x00007FFA2EA65000-memory.dmp

Filesize
2.0MB

Download
memory/4688-21-0x00007FFA2E870000-0x00007FFA2EA65000-memory.dmp

Filesize
2.0MB

Download
memory/4688-27-0x00007FF9EBF90000-0x00007FF9EBFA0000-memory.dmp

Filesize
64KB

Download
memory/4688-20-0x00007FFA2E870000-0x00007FFA2EA65000-memory.dmp

Filesize
2.0MB

Download
memory/4688-23-0x00007FFA2E870000-0x00007FFA2EA65000-memory.dmp

Filesize
2.0MB

Download
memory/4688-18-0x00007FF9EE8F0000-0x00007FF9EE900000-memory.dmp

Filesize
64KB

Download
memory/4688-19-0x00007FFA2E870000-0x00007FFA2EA65000-memory.dmp

Filesize
2.0MB

Download
memory/4688-16-0x00007FF9EE8F0000-0x00007FF9EE900000-memory.dmp

Filesize
64KB

Download
memory/4688-11-0x00007FF9EE8F0000-0x00007FF9EE900000-memory.dmp

Filesize
64KB

Download
memory/4688-49-0x00007FFA2E870000-0x00007FFA2EA65000-memory.dmp

Filesize
2.0MB

Download
memory/4688-12-0x00007FF9EE8F0000-0x00007FF9EE900000-memory.dmp

Filesize
64KB

Download
memory/4688-13-0x00007FF9EE8F0000-0x00007FF9EE900000-memory.dmp

Filesize
64KB

Download
memory/4688-14-0x00007FFA2E90D000-0x00007FFA2E90E000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

Replay Monitor

Loading Replay Monitor...

Downloads