klingon | c66544e5f49feda32c75e9f796681499bda314866e6ae1e11398be9b4bc89349

Analysis

max time kernel
146s
max time network
158s
platform
windows10_x64
resource
win10v20210408
submitted
18-06-2021 07:27

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General

Target

c66544e5f49feda32c75e9f796681499bda314866e6ae1e11398be9b4bc89349.exe
Size

3.1MB
MD5

14471a353788bb6cdb6071d0e0a83004
SHA1

c90b5c534ce0d622547bc5b96075eb3d4212d660
SHA256

c66544e5f49feda32c75e9f796681499bda314866e6ae1e11398be9b4bc89349
SHA512

57d2cc72d41fdcd2363b9dd56fedf75b99512c9aa50386c1595ae59aad70b8d19e264fe82224b446f5b1bbe9b470dc349582782ad061be34d47abd42016c37e8

Score

10^/10

klingon persistence trojan upx

Malware Config

Signatures

Klingon
Klingon is a remote access trojan written in Golang with various capabilities.
trojan klingon

Executes dropped EXE 1 IoCs

Processes:

updater10.exe

pid	Process
2340	updater10.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
behavioral2/files/0x000200000001ab40-116.dat	upx
behavioral2/files/0x000200000001ab40-117.dat	upx

Deletes itself 1 IoCs

Processes:

updater10.exe

pid	Process
2340	updater10.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

updater10.exe

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Updater = "\"C:\\Users\\Admin\\AppData\\Local\\Windows Update\\updater10.exe\" -0 -0"	updater10.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1594587808-2047097707-2163810515-1000\Software\Microsoft\Windows\CurrentVersion\Run\Windows Updater = "\"C:\\Users\\Admin\\AppData\\Local\\Windows Update\\updater10.exe\" -0 -0"	updater10.exe

Looks up external IP address via web service 2 IoCs

Uses a legitimate IP lookup service to find the infected system's external IP.

Processes:

flow	ioc
7	api.ipify.org
8	api.ipify.org

Suspicious use of AdjustPrivilegeToken 64 IoCs

Processes:

wmic.exeWMIC.exe

description	pid	Process
Token: SeIncreaseQuotaPrivilege	4060	wmic.exe
Token: SeSecurityPrivilege	4060	wmic.exe
Token: SeTakeOwnershipPrivilege	4060	wmic.exe
Token: SeLoadDriverPrivilege	4060	wmic.exe
Token: SeSystemProfilePrivilege	4060	wmic.exe
Token: SeSystemtimePrivilege	4060	wmic.exe
Token: SeProfSingleProcessPrivilege	4060	wmic.exe
Token: SeIncBasePriorityPrivilege	4060	wmic.exe
Token: SeCreatePagefilePrivilege	4060	wmic.exe
Token: SeBackupPrivilege	4060	wmic.exe
Token: SeRestorePrivilege	4060	wmic.exe
Token: SeShutdownPrivilege	4060	wmic.exe
Token: SeDebugPrivilege	4060	wmic.exe
Token: SeSystemEnvironmentPrivilege	4060	wmic.exe
Token: SeRemoteShutdownPrivilege	4060	wmic.exe
Token: SeUndockPrivilege	4060	wmic.exe
Token: SeManageVolumePrivilege	4060	wmic.exe
Token: 33	4060	wmic.exe
Token: 34	4060	wmic.exe
Token: 35	4060	wmic.exe
Token: 36	4060	wmic.exe
Token: SeIncreaseQuotaPrivilege	4060	wmic.exe
Token: SeSecurityPrivilege	4060	wmic.exe
Token: SeTakeOwnershipPrivilege	4060	wmic.exe
Token: SeLoadDriverPrivilege	4060	wmic.exe
Token: SeSystemProfilePrivilege	4060	wmic.exe
Token: SeSystemtimePrivilege	4060	wmic.exe
Token: SeProfSingleProcessPrivilege	4060	wmic.exe
Token: SeIncBasePriorityPrivilege	4060	wmic.exe
Token: SeCreatePagefilePrivilege	4060	wmic.exe
Token: SeBackupPrivilege	4060	wmic.exe
Token: SeRestorePrivilege	4060	wmic.exe
Token: SeShutdownPrivilege	4060	wmic.exe
Token: SeDebugPrivilege	4060	wmic.exe
Token: SeSystemEnvironmentPrivilege	4060	wmic.exe
Token: SeRemoteShutdownPrivilege	4060	wmic.exe
Token: SeUndockPrivilege	4060	wmic.exe
Token: SeManageVolumePrivilege	4060	wmic.exe
Token: 33	4060	wmic.exe
Token: 34	4060	wmic.exe
Token: 35	4060	wmic.exe
Token: 36	4060	wmic.exe
Token: SeIncreaseQuotaPrivilege	4040	WMIC.exe
Token: SeSecurityPrivilege	4040	WMIC.exe
Token: SeTakeOwnershipPrivilege	4040	WMIC.exe
Token: SeLoadDriverPrivilege	4040	WMIC.exe
Token: SeSystemProfilePrivilege	4040	WMIC.exe
Token: SeSystemtimePrivilege	4040	WMIC.exe
Token: SeProfSingleProcessPrivilege	4040	WMIC.exe
Token: SeIncBasePriorityPrivilege	4040	WMIC.exe
Token: SeCreatePagefilePrivilege	4040	WMIC.exe
Token: SeBackupPrivilege	4040	WMIC.exe
Token: SeRestorePrivilege	4040	WMIC.exe
Token: SeShutdownPrivilege	4040	WMIC.exe
Token: SeDebugPrivilege	4040	WMIC.exe
Token: SeSystemEnvironmentPrivilege	4040	WMIC.exe
Token: SeRemoteShutdownPrivilege	4040	WMIC.exe
Token: SeUndockPrivilege	4040	WMIC.exe
Token: SeManageVolumePrivilege	4040	WMIC.exe
Token: 33	4040	WMIC.exe
Token: 34	4040	WMIC.exe
Token: 35	4040	WMIC.exe
Token: 36	4040	WMIC.exe
Token: SeIncreaseQuotaPrivilege	4040	WMIC.exe

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

c66544e5f49feda32c75e9f796681499bda314866e6ae1e11398be9b4bc89349.execmd.exeupdater10.execmd.execmd.execmd.execmd.exe

description	pid	Process	procid_target
PID 620 wrote to memory of 1484	620	c66544e5f49feda32c75e9f796681499bda314866e6ae1e11398be9b4bc89349.exe	72
PID 620 wrote to memory of 1484	620	c66544e5f49feda32c75e9f796681499bda314866e6ae1e11398be9b4bc89349.exe	72
PID 1484 wrote to memory of 2340	1484	cmd.exe	74
PID 1484 wrote to memory of 2340	1484	cmd.exe	74
PID 2340 wrote to memory of 4060	2340	updater10.exe	80
PID 2340 wrote to memory of 4060	2340	updater10.exe	80
PID 2340 wrote to memory of 3684	2340	updater10.exe	83
PID 2340 wrote to memory of 3684	2340	updater10.exe	83
PID 2340 wrote to memory of 2104	2340	updater10.exe	85
PID 2340 wrote to memory of 2104	2340	updater10.exe	85
PID 2104 wrote to memory of 4040	2104	cmd.exe	87
PID 2104 wrote to memory of 4040	2104	cmd.exe	87
PID 2340 wrote to memory of 636	2340	updater10.exe	88
PID 2340 wrote to memory of 636	2340	updater10.exe	88
PID 636 wrote to memory of 1484	636	cmd.exe	90
PID 636 wrote to memory of 1484	636	cmd.exe	90
PID 2340 wrote to memory of 2268	2340	updater10.exe	91
PID 2340 wrote to memory of 2268	2340	updater10.exe	91
PID 2268 wrote to memory of 3784	2268	cmd.exe	93
PID 2268 wrote to memory of 3784	2268	cmd.exe	93
PID 2340 wrote to memory of 1872	2340	updater10.exe	94
PID 2340 wrote to memory of 1872	2340	updater10.exe	94
PID 2340 wrote to memory of 1804	2340	updater10.exe	96
PID 2340 wrote to memory of 1804	2340	updater10.exe	96
PID 1804 wrote to memory of 4060	1804	cmd.exe	98
PID 1804 wrote to memory of 4060	1804	cmd.exe	98

C:\Users\Admin\AppData\Local\Temp\c66544e5f49feda32c75e9f796681499bda314866e6ae1e11398be9b4bc89349.exe
"C:\Users\Admin\AppData\Local\Temp\c66544e5f49feda32c75e9f796681499bda314866e6ae1e11398be9b4bc89349.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:620
- C:\Windows\system32\cmd.exe
  cmd /C start "C:\Users\Admin\AppData\Local\Windows Update\updater10.exe" "C:\Users\Admin\AppData\Local\Windows Update\updater10.exe" \"-0\" \"-0\" \"-C:\Users\Admin\AppData\Local\Temp\c66544e5f49feda32c75e9f796681499bda314866e6ae1e11398be9b4bc89349.exe\"
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:1484
- - C:\Users\Admin\AppData\Local\Windows Update\updater10.exe
    "C:\Users\Admin\AppData\Local\Windows Update\updater10.exe" \"-0\" \"-0\" \"-C:\Users\Admin\AppData\Local\Temp\c66544e5f49feda32c75e9f796681499bda314866e6ae1e11398be9b4bc89349.exe\"
    3⤵
    - Executes dropped EXE
    - Deletes itself
    - Adds Run key to start application
    - Suspicious use of WriteProcessMemory
    PID:2340
  - - C:\Windows\System32\Wbem\wmic.exe
      wmic process get Caption,ParentProcessId,ProcessId
      4⤵
      Suspicious use of AdjustPrivilegeToken
      PID:4060
  - - C:\Windows\System32\cmd.exe
      C:\Windows\System32\cmd.exe ver
      4⤵
      PID:3684
  - - C:\Windows\system32\cmd.exe
      cmd /C "wmic /namespace:'\\root\subscription' PATH __EventFilter CREATE Name='GuacBypassFilter', EventNameSpace='root\cimv2', QueryLanguage='WQL', Query='SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA 'Win32_PerfFormattedData_PerfOS_System''"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2104
    - - C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /namespace:'\\root\subscription' PATH __EventFilter CREATE Name='GuacBypassFilter', EventNameSpace='root\cimv2', QueryLanguage='WQL', Query='SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA 'Win32_PerfFormattedData_PerfOS_System''
        5⤵
        Suspicious use of AdjustPrivilegeToken
        
        PID:4040
  - - C:\Windows\system32\cmd.exe
      cmd /C "wmic /namespace:'\\root\subscription' PATH CommandLineEventConsumer CREATE Name='GuacBypassConsumer', ExecutablePath='\"C:\Users\Admin\AppData\Local\Windows Update\updater10.exe\" -0 -0', CommandLineTemplate='\"C:\Users\Admin\AppData\Local\Windows Update\updater10.exe\" -0 -0'"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:636
    - - C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /namespace:'\\root\subscription' PATH CommandLineEventConsumer CREATE Name='GuacBypassConsumer', ExecutablePath='\"C:\Users\Admin\AppData\Local\Windows Update\updater10.exe\" -0 -0', CommandLineTemplate='\"C:\Users\Admin\AppData\Local\Windows Update\updater10.exe\" -0 -0'
        5⤵
        
        PID:1484
  - - C:\Windows\system32\cmd.exe
      cmd /C "wmic /namespace:'\\root\subscription' PATH __FilterToConsumerBinding CREATE Filter='__EventFilter.Name='GuacBypassFilter'', Consumer='CommandLineEventConsumer.Name='GuacBypassConsomer'')"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:2268
    - - C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /namespace:'\\root\subscription' PATH __FilterToConsumerBinding CREATE Filter='__EventFilter.Name='GuacBypassFilter'', Consumer='CommandLineEventConsumer.Name='GuacBypassConsomer'')
        5⤵
        
        PID:3784
  - - C:\Windows\System32\Wbem\wmic.exe
      wmic process get Caption,ParentProcessId,ProcessId
      4⤵
      PID:1872
  - - C:\Windows\system32\cmd.exe
      cmd /C "wmic /namespace:'\\root\subscription' PATH __EventFilter CREATE Name='GuacBypassFilter', EventNameSpace='root\cimv2', QueryLanguage='WQL', Query='SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA 'Win32_PerfFormattedData_PerfOS_System''"
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1804
    - - C:\Windows\System32\Wbem\WMIC.exe
        
        wmic /namespace:'\\root\subscription' PATH __EventFilter CREATE Name='GuacBypassFilter', EventNameSpace='root\cimv2', QueryLanguage='WQL', Query='SELECT * FROM __InstanceModificationEvent WITHIN 60 WHERE TargetInstance ISA 'Win32_PerfFormattedData_PerfOS_System''
        5⤵
        
        PID:4060

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Windows Update\updater10.exe

MD5
14471a353788bb6cdb6071d0e0a83004

SHA1
c90b5c534ce0d622547bc5b96075eb3d4212d660

SHA256
c66544e5f49feda32c75e9f796681499bda314866e6ae1e11398be9b4bc89349

SHA512
57d2cc72d41fdcd2363b9dd56fedf75b99512c9aa50386c1595ae59aad70b8d19e264fe82224b446f5b1bbe9b470dc349582782ad061be34d47abd42016c37e8

Download Submit
C:\Users\Admin\AppData\Local\Windows Update\updater10.exe

MD5
14471a353788bb6cdb6071d0e0a83004

SHA1
c90b5c534ce0d622547bc5b96075eb3d4212d660

SHA256
c66544e5f49feda32c75e9f796681499bda314866e6ae1e11398be9b4bc89349

SHA512
57d2cc72d41fdcd2363b9dd56fedf75b99512c9aa50386c1595ae59aad70b8d19e264fe82224b446f5b1bbe9b470dc349582782ad061be34d47abd42016c37e8

Download Submit
memory/636-122-0x0000000000000000-mapping.dmp

Download
memory/1484-123-0x0000000000000000-mapping.dmp

Download
memory/1484-114-0x0000000000000000-mapping.dmp

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memory/1804-127-0x0000000000000000-mapping.dmp

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memory/1872-126-0x0000000000000000-mapping.dmp

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memory/2104-120-0x0000000000000000-mapping.dmp

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memory/2268-124-0x0000000000000000-mapping.dmp

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memory/2340-115-0x0000000000000000-mapping.dmp

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memory/3684-119-0x0000000000000000-mapping.dmp

Download
memory/3784-125-0x0000000000000000-mapping.dmp

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memory/4040-121-0x0000000000000000-mapping.dmp

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memory/4060-118-0x0000000000000000-mapping.dmp

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memory/4060-128-0x0000000000000000-mapping.dmp

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