2ccbeb636a4514481471ec8a94be267f1322da2d8d37c66edf06968ba54eaa98

General

Target
client.exe
Size 28KB
Sample261023-qc3bvaby4v
SHA256 2ccbeb636a4514481471ec8a94be267f1322da2d8d37c66edf06968ba54eaa98
MD5 3581544ae5ab3e1e3f5ab837a9f9cd92
SHA1 32362579487a49efa4d37f9bef543d385ed0ed61
SHA512 e2a3c4aadb2fba40b9ef75b6011a35142df11837e9ff7f295fe981e70254073c8a878bf256e3a4fada5338b2d043ce350d1e4b245bee1b64c081c50288161019
SSDEEP 768:oQzS4YRYn6HYn6Nwm+Jnvb2T9nEaVpMupAT5bPRS5LnzyDDIdS5J:ulE6pMuGbPRSJnaDfn
TLSH
T130D23705B3FC8B36D5BD897D58F2551143F1D61B5826EBAD0ED8A8E90AA33C0B111FA3
MD5 SHA1 SHA512 SSDEEP TLSH

Score

7^/10

defense_evasion discovery execution persistence

Malware Config

Signatures

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-1-5-21-895009113-1202185046-1686627690-1000\Control Panel\International\Geo\Nation	client.exe

Executes a file named after a Windows system binary 1 TTPs 1 IoCs

The file runs from a user directory while carrying the name of an executable that normally only exists in System32.

defense_evasion

Match Legitimate Name or Location

T1036.005

description	ioc	Process
File opened (read-only)	C:\Users\Admin\AppData\Roaming\svchost.exe	svchost.exe

Executes dropped EXE 1 IoCs

pid	Process
3056	svchost.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\USER\S-1-5-21-895009113-1202185046-1686627690-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Windows Update Service = "C:\\Users\\Admin\\AppData\\Roaming\\svchost.exe"	client.exe

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

System Information Discovery
T1082

Program crash 2 IoCs

pid	pid_target	Process	procid_target
3780	2800	WerFault.exe	86
372	3056	WerFault.exe	91

Reads the TCP/IP host and domain name from the registry 1 TTPs 4 IoCs

The configured hostname and DNS domain identify the machine and are commonly collected to profile a host before it reports in.

discovery

System Network Configuration Discovery

T1016

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	client.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	client.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Domain	svchost.exe
Key value queried	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Services\Tcpip\Parameters\Hostname	svchost.exe

System Location Discovery: System Language Discovery 1 TTPs 3 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	client.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	svchost.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
1724	schtasks.exe

Suspicious behavior: EnumeratesProcesses 2 IoCs

pid	Process
2800	client.exe
3056	svchost.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2800	client.exe
Token: SeDebugPrivilege	3056	svchost.exe

Suspicious use of WriteProcessMemory 1 IoCs

description	pid	Process	procid_target
PID 2800 wrote to memory of 1724	2800	client.exe	87

C:\Users\Admin\AppData\Local\Temp\client.exe
"C:\Users\Admin\AppData\Local\Temp\client.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2800
- C:\Windows\SysWOW64\schtasks.exe
  "C:\Windows\System32\schtasks.exe" /create /tn "Windows Update Service" /tr "C:\Users\Admin\AppData\Roaming\svchost.exe" /sc onlogon /f
  2⤵
  - System Location Discovery: System Language Discovery
  - Scheduled Task/Job: Scheduled Task
  PID:1724
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 2800 -s 1560
  2⤵
  - Program crash
  PID:3780

C:\Users\Admin\AppData\Roaming\svchost.exe
C:\Users\Admin\AppData\Roaming\svchost.exe
1⤵
- Executes a file named after a Windows system binary
- Executes dropped EXE
- Reads the TCP/IP host and domain name from the registry
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3056
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 3056 -s 1144
  2⤵
  - Program crash
  PID:372

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 416 -p 2800 -ip 2800
1⤵
PID:4676

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 484 -p 3056 -ip 3056
1⤵
PID:3736

Network

MITRE ATT&CK Enterprise v16

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Defense Evasion

Masquerading

1

T1036

Match Legitimate Name or Location

Modify Registry

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

System Network Configuration Discovery

1

T1016

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

svchost.exe

Path C:\Users\Admin\AppData\Roaming\svchost.exe
Size 28KB
SHA256 2ccbeb636a4514481471ec8a94be267f1322da2d8d37c66edf06968ba54eaa98
MD5 3581544ae5ab3e1e3f5ab837a9f9cd92
SHA1 32362579487a49efa4d37f9bef543d385ed0ed61
SHA512 e2a3c4aadb2fba40b9ef75b6011a35142df11837e9ff7f295fe981e70254073c8a878bf256e3a4fada5338b2d043ce350d1e4b245bee1b64c081c50288161019
SSDEEP 768:oQzS4YRYn6HYn6Nwm+Jnvb2T9nEaVpMupAT5bPRS5LnzyDDIdS5J:ulE6pMuGbPRSJnaDfn
TLSH
T130D23705B3FC8B36D5BD897D58F2551143F1D61B5826EBAD0ED8A8E90AA33C0B111FA3
MD5 SHA1 SHA512 SSDEEP TLSH

Submit Download

memory/2800-0-0x0000000000130000-0x000000000013E000-memory.dmp

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memory/2800-1-0x00000000050E0000-0x0000000005684000-memory.dmp

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memory/2800-2-0x0000000004B30000-0x0000000004BC2000-memory.dmp

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memory/2800-4-0x0000000004ED0000-0x0000000004EE0000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v16

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