95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6

General

Target

95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6.exe
Size

380KB
MD5

7e32b15bb7b8f360069cdda45a0bc586
SHA1

e6164c61845d71348854146e1dd686626b873e1c
SHA256

95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6
SHA512

4bd833f5d765fc17b0263d8f1a51a3f26e7f2ce88cb1d8d067c218ce790c62a0eb2674874b9fd6c6847e8507bbc3bbb71f82bc66e46aeda481aa79bf81deeed0
SSDEEP

6144:QoDxqVZPb98PcOkLzNrXR36bAqkwHgmbZMDhNGPtad9Q0fFVqFwWYdYk:J0VZPb9KcJN5is7G1YRFVqCWc7

Score

8^/10

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
3644	esrsvrgctd.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-1-5-21-2386679933-1492765628-3466841596-1000\Control Panel\International\Geo\Nation	95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6.exe

Loads dropped DLL 1 IoCs

pid	Process
3644	esrsvrgctd.exe

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2386679933-1492765628-3466841596-1000\Software\Microsoft\Windows\CurrentVersion\RunOnce	95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6.exe

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

System Information Discovery
T1082

Program crash 1 IoCs

pid	pid_target	Process	procid_target
3908	3644	WerFault.exe	90

Kills process with taskkill 1 IoCs

evasion

pid	Process
4324	taskkill.exe

Runs ping.exe 1 TTPs 1 IoCs

Remote System Discovery

T1018

pid	Process
2016	PING.EXE

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	4324	taskkill.exe

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
3644	esrsvrgctd.exe
3644	esrsvrgctd.exe
3644	esrsvrgctd.exe
3644	esrsvrgctd.exe

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
3644	esrsvrgctd.exe
3644	esrsvrgctd.exe
3644	esrsvrgctd.exe
3644	esrsvrgctd.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1248 wrote to memory of 3192	1248	95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6.exe	86
PID 1248 wrote to memory of 3192	1248	95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6.exe	86
PID 1248 wrote to memory of 3192	1248	95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6.exe	86
PID 3192 wrote to memory of 4324	3192	cmd.exe	88
PID 3192 wrote to memory of 4324	3192	cmd.exe	88
PID 3192 wrote to memory of 4324	3192	cmd.exe	88
PID 3192 wrote to memory of 2016	3192	cmd.exe	89
PID 3192 wrote to memory of 2016	3192	cmd.exe	89
PID 3192 wrote to memory of 2016	3192	cmd.exe	89
PID 3192 wrote to memory of 3644	3192	cmd.exe	90
PID 3192 wrote to memory of 3644	3192	cmd.exe	90
PID 3192 wrote to memory of 3644	3192	cmd.exe	90

C:\Users\Admin\AppData\Local\Temp\95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6.exe
"C:\Users\Admin\AppData\Local\Temp\95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
PID:1248
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\System32\cmd.exe" /c taskkill /f /pid 1248 & ping -n 3 127.1 & del /f /q "C:\Users\Admin\AppData\Local\Temp\95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6.exe" & start C:\Users\Admin\AppData\Local\ESRSVR~1.EXE -f
  2⤵
  - Suspicious use of WriteProcessMemory
  PID:3192
- - C:\Windows\SysWOW64\taskkill.exe
    taskkill /f /pid 1248
    3⤵
    - Kills process with taskkill
    - Suspicious use of AdjustPrivilegeToken
    PID:4324
- - C:\Windows\SysWOW64\PING.EXE
    ping -n 3 127.1
    3⤵
    - Runs ping.exe
    PID:2016
- - C:\Users\Admin\AppData\Local\esrsvrgctd.exe
    C:\Users\Admin\AppData\Local\ESRSVR~1.EXE -f
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of FindShellTrayWindow
    - Suspicious use of SendNotifyMessage
    PID:3644
  - - C:\Windows\SysWOW64\WerFault.exe
      C:\Windows\SysWOW64\WerFault.exe -u -p 3644 -s 516
      4⤵
      Program crash
      PID:3908

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1248 -ip 1248
1⤵
PID:3156

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 464 -p 3644 -ip 3644
1⤵
PID:2388

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

Remote System Discovery

1

T1018

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\esrsvrgctd.exe

Filesize
380KB

MD5
7e32b15bb7b8f360069cdda45a0bc586

SHA1
e6164c61845d71348854146e1dd686626b873e1c

SHA256
95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6

SHA512
4bd833f5d765fc17b0263d8f1a51a3f26e7f2ce88cb1d8d067c218ce790c62a0eb2674874b9fd6c6847e8507bbc3bbb71f82bc66e46aeda481aa79bf81deeed0

Download Submit
C:\Users\Admin\AppData\Local\esrsvrgctd.exe

Filesize
380KB

MD5
7e32b15bb7b8f360069cdda45a0bc586

SHA1
e6164c61845d71348854146e1dd686626b873e1c

SHA256
95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6

SHA512
4bd833f5d765fc17b0263d8f1a51a3f26e7f2ce88cb1d8d067c218ce790c62a0eb2674874b9fd6c6847e8507bbc3bbb71f82bc66e46aeda481aa79bf81deeed0

Download Submit
C:\Users\Admin\AppData\Local\esrsvrgctd.exe

Filesize
380KB

MD5
7e32b15bb7b8f360069cdda45a0bc586

SHA1
e6164c61845d71348854146e1dd686626b873e1c

SHA256
95f61542c808473f05741c4e81a1e6541cde9e23cff77102bfb83a74d594a5c6

SHA512
4bd833f5d765fc17b0263d8f1a51a3f26e7f2ce88cb1d8d067c218ce790c62a0eb2674874b9fd6c6847e8507bbc3bbb71f82bc66e46aeda481aa79bf81deeed0

Download Submit
memory/1248-132-0x0000000001000000-0x00000000010B6000-memory.dmp

Filesize
728KB

Download
memory/1248-133-0x0000000001000000-0x00000000010B6000-memory.dmp

Filesize
728KB

Download
memory/1248-135-0x0000000001000000-0x00000000010B6000-memory.dmp

Filesize
728KB

Download
memory/2016-137-0x0000000000000000-mapping.dmp

Download
memory/3192-134-0x0000000000000000-mapping.dmp

Download
memory/3644-138-0x0000000000000000-mapping.dmp

Download
memory/4324-136-0x0000000000000000-mapping.dmp

Download

Analysis

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