8592d578f269100d67bf1faa464e23de7bf0c1266bad19d2bf6bcce0501158a3

Analysis

max time kernel
119s
max time network
123s
platform
windows7_x64
resource
win7-en-20211208
submitted
07/01/2022, 07:53

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General

Target
c055c5f198be863beac77ee77137a8f8.exe
Size 1.6MB
Sample220107-jq2txacddp
SHA256 8592d578f269100d67bf1faa464e23de7bf0c1266bad19d2bf6bcce0501158a3
MD5 c055c5f198be863beac77ee77137a8f8
SHA1 268408b3486eae3a0a64f0377cb6ef81f8edc102
SHA512 e9167e66db7eb6d989ab1d81069d5ffb4c5e4fdbe078e81c6f28a97a6991569a9fedc8c347a502f01cee479aa37ad2111cde48f9da23a2009980eaa90cb18805
MD5 SHA1 SHA512

Score

10^/10

persistence

Malware Config

Signatures

Modifies WinLogon for persistence 2 TTPs 1 IoCs

persistence

Winlogon Helper DLL

T1004

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\USER\S-1-5-21-3846991908-3261386348-1409841751-1000\Software\Microsoft\Windows NT\CurrentVersion\Winlogon\Shell = "explorer.exe,\"C:\\Users\\Admin\\AppData\\Roaming\\Discord\\Discord.exe\","	c055c5f198be863beac77ee77137a8f8.exe

Nirsoft 9 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012229-94.dat	Nirsoft
behavioral1/files/0x000a000000012229-96.dat	Nirsoft
behavioral1/files/0x000a000000012229-97.dat	Nirsoft
behavioral1/files/0x000a000000012229-98.dat	Nirsoft
behavioral1/files/0x000a000000012229-100.dat	Nirsoft
behavioral1/files/0x000a000000012229-103.dat	Nirsoft
behavioral1/files/0x000a000000012229-105.dat	Nirsoft
behavioral1/files/0x000a000000012229-106.dat	Nirsoft
behavioral1/files/0x000a000000012229-108.dat	Nirsoft

Executes dropped EXE 4 IoCs

pid	Process
1964	AdvancedRun.exe
1280	AdvancedRun.exe
1576	AdvancedRun.exe
1112	AdvancedRun.exe

Loads dropped DLL 4 IoCs

pid	Process
1964	AdvancedRun.exe
1964	AdvancedRun.exe
1576	AdvancedRun.exe
1576	AdvancedRun.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1640 set thread context of 648	1640	c055c5f198be863beac77ee77137a8f8.exe	42

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

System Information Discovery
T1082

Gathers network information 2 TTPs 2 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command-Line Interface

T1059

pid	Process
1096	ipconfig.exe
992	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 13 IoCs

pid	Process
516	powershell.exe
1800	powershell.exe
1520	powershell.exe
1760	powershell.exe
1964	AdvancedRun.exe
1964	AdvancedRun.exe
1280	AdvancedRun.exe
1280	AdvancedRun.exe
1576	AdvancedRun.exe
1576	AdvancedRun.exe
1112	AdvancedRun.exe
1112	AdvancedRun.exe
1640	c055c5f198be863beac77ee77137a8f8.exe

Suspicious use of AdjustPrivilegeToken 13 IoCs

description	pid	Process
Token: SeDebugPrivilege	1640	c055c5f198be863beac77ee77137a8f8.exe
Token: SeDebugPrivilege	516	powershell.exe
Token: SeDebugPrivilege	1800	powershell.exe
Token: SeDebugPrivilege	1520	powershell.exe
Token: SeDebugPrivilege	1760	powershell.exe
Token: SeDebugPrivilege	1964	AdvancedRun.exe
Token: SeImpersonatePrivilege	1964	AdvancedRun.exe
Token: SeDebugPrivilege	1280	AdvancedRun.exe
Token: SeImpersonatePrivilege	1280	AdvancedRun.exe
Token: SeDebugPrivilege	1576	AdvancedRun.exe
Token: SeImpersonatePrivilege	1576	AdvancedRun.exe
Token: SeDebugPrivilege	1112	AdvancedRun.exe
Token: SeImpersonatePrivilege	1112	AdvancedRun.exe

Suspicious use of WriteProcessMemory 41 IoCs

description	pid	Process	procid_target
PID 1640 wrote to memory of 516	1640	c055c5f198be863beac77ee77137a8f8.exe	28
PID 1640 wrote to memory of 516	1640	c055c5f198be863beac77ee77137a8f8.exe	28
PID 1640 wrote to memory of 516	1640	c055c5f198be863beac77ee77137a8f8.exe	28
PID 516 wrote to memory of 1096	516	powershell.exe	30
PID 516 wrote to memory of 1096	516	powershell.exe	30
PID 516 wrote to memory of 1096	516	powershell.exe	30
PID 1640 wrote to memory of 1800	1640	c055c5f198be863beac77ee77137a8f8.exe	31
PID 1640 wrote to memory of 1800	1640	c055c5f198be863beac77ee77137a8f8.exe	31
PID 1640 wrote to memory of 1800	1640	c055c5f198be863beac77ee77137a8f8.exe	31
PID 1640 wrote to memory of 1520	1640	c055c5f198be863beac77ee77137a8f8.exe	33
PID 1640 wrote to memory of 1520	1640	c055c5f198be863beac77ee77137a8f8.exe	33
PID 1640 wrote to memory of 1520	1640	c055c5f198be863beac77ee77137a8f8.exe	33
PID 1520 wrote to memory of 992	1520	powershell.exe	35
PID 1520 wrote to memory of 992	1520	powershell.exe	35
PID 1520 wrote to memory of 992	1520	powershell.exe	35
PID 1640 wrote to memory of 1760	1640	c055c5f198be863beac77ee77137a8f8.exe	36
PID 1640 wrote to memory of 1760	1640	c055c5f198be863beac77ee77137a8f8.exe	36
PID 1640 wrote to memory of 1760	1640	c055c5f198be863beac77ee77137a8f8.exe	36
PID 1640 wrote to memory of 1964	1640	c055c5f198be863beac77ee77137a8f8.exe	38
PID 1640 wrote to memory of 1964	1640	c055c5f198be863beac77ee77137a8f8.exe	38
PID 1640 wrote to memory of 1964	1640	c055c5f198be863beac77ee77137a8f8.exe	38
PID 1640 wrote to memory of 1964	1640	c055c5f198be863beac77ee77137a8f8.exe	38
PID 1964 wrote to memory of 1280	1964	AdvancedRun.exe	39
PID 1964 wrote to memory of 1280	1964	AdvancedRun.exe	39
PID 1964 wrote to memory of 1280	1964	AdvancedRun.exe	39
PID 1964 wrote to memory of 1280	1964	AdvancedRun.exe	39
PID 1640 wrote to memory of 1576	1640	c055c5f198be863beac77ee77137a8f8.exe	40
PID 1640 wrote to memory of 1576	1640	c055c5f198be863beac77ee77137a8f8.exe	40
PID 1640 wrote to memory of 1576	1640	c055c5f198be863beac77ee77137a8f8.exe	40
PID 1640 wrote to memory of 1576	1640	c055c5f198be863beac77ee77137a8f8.exe	40
PID 1576 wrote to memory of 1112	1576	AdvancedRun.exe	41
PID 1576 wrote to memory of 1112	1576	AdvancedRun.exe	41
PID 1576 wrote to memory of 1112	1576	AdvancedRun.exe	41
PID 1576 wrote to memory of 1112	1576	AdvancedRun.exe	41
PID 1640 wrote to memory of 648	1640	c055c5f198be863beac77ee77137a8f8.exe	42
PID 1640 wrote to memory of 648	1640	c055c5f198be863beac77ee77137a8f8.exe	42
PID 1640 wrote to memory of 648	1640	c055c5f198be863beac77ee77137a8f8.exe	42
PID 1640 wrote to memory of 648	1640	c055c5f198be863beac77ee77137a8f8.exe	42
PID 1640 wrote to memory of 648	1640	c055c5f198be863beac77ee77137a8f8.exe	42
PID 1640 wrote to memory of 648	1640	c055c5f198be863beac77ee77137a8f8.exe	42
PID 1640 wrote to memory of 648	1640	c055c5f198be863beac77ee77137a8f8.exe	42

C:\Users\Admin\AppData\Local\Temp\c055c5f198be863beac77ee77137a8f8.exe
"C:\Users\Admin\AppData\Local\Temp\c055c5f198be863beac77ee77137a8f8.exe"
1⤵
- Modifies WinLogon for persistence
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1640
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc aQBwAGMAbwBuAGYAaQBnACAALwByAGUAbABlAGEAcwBlAA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:516
- - C:\Windows\system32\ipconfig.exe
    "C:\Windows\system32\ipconfig.exe" /release
    3⤵
    - Gathers network information
    PID:1096
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBzACAAMgA1AA==
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1800
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc aQBwAGMAbwBuAGYAaQBnACAALwByAGUAbgBlAHcA
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1520
- - C:\Windows\system32\ipconfig.exe
    "C:\Windows\system32\ipconfig.exe" /renew
    3⤵
    - Gathers network information
    PID:992
- C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe
  "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMQAuADUA
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  PID:1760
- C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
  "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /EXEFilename "C:\Windows\System32\sc.exe" /WindowState 0 /CommandLine "stop WinDefend" /StartDirectory "" /RunAs 8 /Run
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1964
- - C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
    "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /SpecialRun 4101d8 1964
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1280
- C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
  "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /EXEFilename "C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" /WindowState 0 /CommandLine "rmdir 'C:\ProgramData\Microsoft\Windows Defender' -Recurse" /StartDirectory "" /RunAs 8 /Run
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1576
- - C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe
    "C:\Users\Admin\AppData\Local\Temp\AdvancedRun.exe" /SpecialRun 4101d8 1576
    3⤵
    - Executes dropped EXE
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1112
- C:\Users\Admin\AppData\Local\Temp\c055c5f198be863beac77ee77137a8f8.exe
  C:\Users\Admin\AppData\Local\Temp\c055c5f198be863beac77ee77137a8f8.exe
  2⤵
  PID:648

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

T1059

Persistence

Winlogon Helper DLL

T1004

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/516-69-0x000000000259B000-0x00000000025BA000-memory.dmp

Download

memory/516-57-0x000007FEFC0E1000-0x000007FEFC0E3000-memory.dmp

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memory/516-62-0x0000000002594000-0x0000000002597000-memory.dmp

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memory/516-60-0x0000000002590000-0x0000000002592000-memory.dmp

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memory/516-58-0x000007FEEE3C0000-0x000007FEEEF1D000-memory.dmp

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memory/516-61-0x0000000002592000-0x0000000002594000-memory.dmp

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memory/648-110-0x0000000000400000-0x0000000000480000-memory.dmp

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memory/648-111-0x0000000000400000-0x0000000000480000-memory.dmp

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memory/648-112-0x0000000000400000-0x0000000000480000-memory.dmp

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memory/648-113-0x0000000000400000-0x0000000000480000-memory.dmp

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memory/1520-81-0x00000000025EB000-0x000000000260A000-memory.dmp

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memory/1520-83-0x00000000025E4000-0x00000000025E7000-memory.dmp

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memory/1520-77-0x000007FEEE3C0000-0x000007FEEEF1D000-memory.dmp

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memory/1520-78-0x00000000025E0000-0x00000000025E2000-memory.dmp

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memory/1520-79-0x000000001B740000-0x000000001BA3F000-memory.dmp

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memory/1520-80-0x00000000025E2000-0x00000000025E4000-memory.dmp

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memory/1640-92-0x000000001AF80000-0x000000001B03E000-memory.dmp

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memory/1640-59-0x000000001B110000-0x000000001B112000-memory.dmp

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memory/1640-55-0x00000000003A0000-0x0000000000538000-memory.dmp

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memory/1640-54-0x00000000003A0000-0x0000000000538000-memory.dmp

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memory/1760-87-0x000007FEED4E0000-0x000007FEEE03D000-memory.dmp

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memory/1760-91-0x00000000024CB000-0x00000000024EA000-memory.dmp

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memory/1760-88-0x00000000024C0000-0x00000000024C2000-memory.dmp

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memory/1760-90-0x00000000024C4000-0x00000000024C7000-memory.dmp

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memory/1760-89-0x00000000024C2000-0x00000000024C4000-memory.dmp

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memory/1800-68-0x000000001B7A0000-0x000000001BA9F000-memory.dmp

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memory/1800-73-0x000000000277B000-0x000000000279A000-memory.dmp

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memory/1800-70-0x0000000002770000-0x0000000002772000-memory.dmp

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memory/1800-71-0x0000000002772000-0x0000000002774000-memory.dmp

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memory/1800-72-0x0000000002774000-0x0000000002777000-memory.dmp

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memory/1800-67-0x000007FEED4E0000-0x000007FEEE03D000-memory.dmp

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memory/1964-95-0x0000000075531000-0x0000000075533000-memory.dmp

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