darkcomet | 8a3de78cf177be4c37c1525becf05af336c1dc2a4d181cae79f6903754902efa

Analysis

max time kernel
149s
max time network
138s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
25-12-2024 11:40

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General

Target

test.exe
Size

251KB
MD5

57bd4f73690590693b5b921f29679410
SHA1

c2cb47bf602541043589e979f21c3d7c1698e3ac
SHA256

8a3de78cf177be4c37c1525becf05af336c1dc2a4d181cae79f6903754902efa
SHA512

00b543644058a93f1c0a13e4d40b1c4e76f9581325f1773d79983761ca6903643e5a44717e7785b27a8fac2a6609c19032e3f412d3339e9cc5dc697791890318
SSDEEP

6144:ZcNYS996KFifeVjBpeExgVTFSXFoMc5RhCaL37:ZcW7KEZlPzCy37

Score

10^/10

darkcomet googledebugger discovery evasion persistence rat trojan upx

Malware Config

Extracted

Family

darkcomet

Botnet

GoogleDebugger

147.185.221.24:14161

Mutex

RO_MUTEX-8HU43EZ

Attributes

InstallPath
ChromeCookies\ChromeCookie.exe
gencode
WN0BLB8aPxBw
install
true
offline_keylogger
true
persistence
true
reg_key
GoogleDebugJ

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\\Local\\Temp\\ChromeCookies\\ChromeCookie.exe"	test.exe

Disables Task Manager via registry modification
evasion

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
3044	attrib.exe
2204	attrib.exe

Executes dropped EXE 1 IoCs

pid	Process
2968	ChromeCookie.exe

Loads dropped DLL 2 IoCs

pid	Process
2380	test.exe
2380	test.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-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\GoogleDebugJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ChromeCookies\\ChromeCookie.exe"	iexplore.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\GoogleDebugJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ChromeCookies\\ChromeCookie.exe"	test.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-3533259084-2542256011-65585152-1000\Software\Microsoft\Windows\CurrentVersion\Run\GoogleDebugJ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\ChromeCookies\\ChromeCookie.exe"	ChromeCookie.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2968 set thread context of 2720	2968	ChromeCookie.exe	37

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2380-0-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/files/0x0007000000016652-6.dat	upx
behavioral1/memory/2968-15-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2380-12-0x00000000040F0000-0x00000000041A7000-memory.dmp	upx
behavioral1/memory/2720-17-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2968-19-0x0000000000400000-0x00000000004B7000-memory.dmp	upx
behavioral1/memory/2380-59-0x0000000000400000-0x00000000004B7000-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 8 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	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	test.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
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ChromeCookie.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	iexplore.exe

Suspicious use of AdjustPrivilegeToken 64 IoCs

description	pid	Process
Token: SeIncreaseQuotaPrivilege	2380	test.exe
Token: SeSecurityPrivilege	2380	test.exe
Token: SeTakeOwnershipPrivilege	2380	test.exe
Token: SeLoadDriverPrivilege	2380	test.exe
Token: SeSystemProfilePrivilege	2380	test.exe
Token: SeSystemtimePrivilege	2380	test.exe
Token: SeProfSingleProcessPrivilege	2380	test.exe
Token: SeIncBasePriorityPrivilege	2380	test.exe
Token: SeCreatePagefilePrivilege	2380	test.exe
Token: SeBackupPrivilege	2380	test.exe
Token: SeRestorePrivilege	2380	test.exe
Token: SeShutdownPrivilege	2380	test.exe
Token: SeDebugPrivilege	2380	test.exe
Token: SeSystemEnvironmentPrivilege	2380	test.exe
Token: SeChangeNotifyPrivilege	2380	test.exe
Token: SeRemoteShutdownPrivilege	2380	test.exe
Token: SeUndockPrivilege	2380	test.exe
Token: SeManageVolumePrivilege	2380	test.exe
Token: SeImpersonatePrivilege	2380	test.exe
Token: SeCreateGlobalPrivilege	2380	test.exe
Token: 33	2380	test.exe
Token: 34	2380	test.exe
Token: 35	2380	test.exe
Token: SeIncreaseQuotaPrivilege	2968	ChromeCookie.exe
Token: SeSecurityPrivilege	2968	ChromeCookie.exe
Token: SeTakeOwnershipPrivilege	2968	ChromeCookie.exe
Token: SeLoadDriverPrivilege	2968	ChromeCookie.exe
Token: SeSystemProfilePrivilege	2968	ChromeCookie.exe
Token: SeSystemtimePrivilege	2968	ChromeCookie.exe
Token: SeProfSingleProcessPrivilege	2968	ChromeCookie.exe
Token: SeIncBasePriorityPrivilege	2968	ChromeCookie.exe
Token: SeCreatePagefilePrivilege	2968	ChromeCookie.exe
Token: SeBackupPrivilege	2968	ChromeCookie.exe
Token: SeRestorePrivilege	2968	ChromeCookie.exe
Token: SeShutdownPrivilege	2968	ChromeCookie.exe
Token: SeDebugPrivilege	2968	ChromeCookie.exe
Token: SeSystemEnvironmentPrivilege	2968	ChromeCookie.exe
Token: SeChangeNotifyPrivilege	2968	ChromeCookie.exe
Token: SeRemoteShutdownPrivilege	2968	ChromeCookie.exe
Token: SeUndockPrivilege	2968	ChromeCookie.exe
Token: SeManageVolumePrivilege	2968	ChromeCookie.exe
Token: SeImpersonatePrivilege	2968	ChromeCookie.exe
Token: SeCreateGlobalPrivilege	2968	ChromeCookie.exe
Token: 33	2968	ChromeCookie.exe
Token: 34	2968	ChromeCookie.exe
Token: 35	2968	ChromeCookie.exe
Token: SeIncreaseQuotaPrivilege	2720	iexplore.exe
Token: SeSecurityPrivilege	2720	iexplore.exe
Token: SeTakeOwnershipPrivilege	2720	iexplore.exe
Token: SeLoadDriverPrivilege	2720	iexplore.exe
Token: SeSystemProfilePrivilege	2720	iexplore.exe
Token: SeSystemtimePrivilege	2720	iexplore.exe
Token: SeProfSingleProcessPrivilege	2720	iexplore.exe
Token: SeIncBasePriorityPrivilege	2720	iexplore.exe
Token: SeCreatePagefilePrivilege	2720	iexplore.exe
Token: SeBackupPrivilege	2720	iexplore.exe
Token: SeRestorePrivilege	2720	iexplore.exe
Token: SeShutdownPrivilege	2720	iexplore.exe
Token: SeDebugPrivilege	2720	iexplore.exe
Token: SeSystemEnvironmentPrivilege	2720	iexplore.exe
Token: SeChangeNotifyPrivilege	2720	iexplore.exe
Token: SeRemoteShutdownPrivilege	2720	iexplore.exe
Token: SeUndockPrivilege	2720	iexplore.exe
Token: SeManageVolumePrivilege	2720	iexplore.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
2720	iexplore.exe

Suspicious use of WriteProcessMemory 49 IoCs

description	pid	Process	procid_target
PID 2380 wrote to memory of 2076	2380	test.exe	30
PID 2380 wrote to memory of 2076	2380	test.exe	30
PID 2380 wrote to memory of 2076	2380	test.exe	30
PID 2380 wrote to memory of 2076	2380	test.exe	30
PID 2380 wrote to memory of 1664	2380	test.exe	32
PID 2380 wrote to memory of 1664	2380	test.exe	32
PID 2380 wrote to memory of 1664	2380	test.exe	32
PID 2380 wrote to memory of 1664	2380	test.exe	32
PID 2076 wrote to memory of 3044	2076	cmd.exe	34
PID 2076 wrote to memory of 3044	2076	cmd.exe	34
PID 2076 wrote to memory of 3044	2076	cmd.exe	34
PID 2076 wrote to memory of 3044	2076	cmd.exe	34
PID 1664 wrote to memory of 2204	1664	cmd.exe	35
PID 1664 wrote to memory of 2204	1664	cmd.exe	35
PID 1664 wrote to memory of 2204	1664	cmd.exe	35
PID 1664 wrote to memory of 2204	1664	cmd.exe	35
PID 2380 wrote to memory of 2968	2380	test.exe	36
PID 2380 wrote to memory of 2968	2380	test.exe	36
PID 2380 wrote to memory of 2968	2380	test.exe	36
PID 2380 wrote to memory of 2968	2380	test.exe	36
PID 2968 wrote to memory of 2720	2968	ChromeCookie.exe	37
PID 2968 wrote to memory of 2720	2968	ChromeCookie.exe	37
PID 2968 wrote to memory of 2720	2968	ChromeCookie.exe	37
PID 2968 wrote to memory of 2720	2968	ChromeCookie.exe	37
PID 2968 wrote to memory of 2720	2968	ChromeCookie.exe	37
PID 2968 wrote to memory of 2720	2968	ChromeCookie.exe	37
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38
PID 2720 wrote to memory of 2832	2720	iexplore.exe	38

Views/modifies file attributes 1 TTPs 2 IoCs

evasion

Hidden Files and Directories

T1564.001

pid	Process
3044	attrib.exe
2204	attrib.exe

C:\Users\Admin\AppData\Local\Temp\test.exe
"C:\Users\Admin\AppData\Local\Temp\test.exe"
1⤵
- Modifies WinLogon for persistence
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2380
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp\test.exe" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2076
- - C:\Windows\SysWOW64\attrib.exe
    attrib "C:\Users\Admin\AppData\Local\Temp\test.exe" +s +h
    3⤵
    - Sets file to hidden
    - System Location Discovery: System Language Discovery
    - Views/modifies file attributes
    PID:3044
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /k attrib "C:\Users\Admin\AppData\Local\Temp" +s +h
  2⤵
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1664
- - 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:2204
- C:\Users\Admin\AppData\Local\Temp\ChromeCookies\ChromeCookie.exe
  "C:\Users\Admin\AppData\Local\Temp\ChromeCookies\ChromeCookie.exe"
  2⤵
  - Executes dropped EXE
  - 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:2968
- - C:\Program Files (x86)\Internet Explorer\iexplore.exe
    "C:\Program Files (x86)\Internet Explorer\iexplore.exe"
    3⤵
    - Adds Run key to start application
    - System Location Discovery: System Language Discovery
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of SetWindowsHookEx
    - Suspicious use of WriteProcessMemory
    PID:2720
  - - C:\Windows\SysWOW64\notepad.exe
      notepad
      4⤵
      System Location Discovery: System Language Discovery
      PID:2832

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

Hide Artifacts

T1564

Hidden Files and Directories

T1564.001

Modify Registry

T1112

Credential Access

Discovery

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

\Users\Admin\AppData\Local\Temp\ChromeCookies\ChromeCookie.exe

Filesize
251KB

MD5
57bd4f73690590693b5b921f29679410

SHA1
c2cb47bf602541043589e979f21c3d7c1698e3ac

SHA256
8a3de78cf177be4c37c1525becf05af336c1dc2a4d181cae79f6903754902efa

SHA512
00b543644058a93f1c0a13e4d40b1c4e76f9581325f1773d79983761ca6903643e5a44717e7785b27a8fac2a6609c19032e3f412d3339e9cc5dc697791890318

Download Submit
memory/2380-0-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2380-1-0x0000000000270000-0x0000000000271000-memory.dmp

Filesize
4KB

Download
memory/2380-13-0x00000000040F0000-0x00000000041A7000-memory.dmp

Filesize
732KB

Download
memory/2380-12-0x00000000040F0000-0x00000000041A7000-memory.dmp

Filesize
732KB

Download
memory/2380-59-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2720-17-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2832-58-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/2832-20-0x0000000000080000-0x0000000000081000-memory.dmp

Filesize
4KB

Download
memory/2968-15-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download
memory/2968-19-0x0000000000400000-0x00000000004B7000-memory.dmp

Filesize
732KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads