a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df

Analysis

max time kernel
148s
max time network
146s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
04/04/2024, 23:31

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General

Target
a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df.exe
Size 126KB
Sample240404-3hz5wsec83
SHA256 a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df
MD5 16b08173109d3efc62f5169b656b33ed
SHA1 9e46dc42dec68bb03cd5885923db111d9e471ff4
SHA512 3b42305cf7d4a15b5c5fdcc5b8de751dc599d0724aaaecb0554e20bb842c58fe0047cbc9a3ebf2b36d68c18807bb096027e034d1097391eb36980fb73541285b
SSDEEP 1536:IE3qz4ayX9ioT5Xl8lQWj1vTo5G6kvBzodfjZt4ZDp/nrHrA:179l86WqGzIfjZtSDp/nrHrA
MD5 SHA1 SHA512 SSDEEP

Score

9^/10

persistence

Malware Config

Signatures

Detects executables built or packed with MPress PE compressor 4 IoCs

resource	yara_rule
behavioral2/memory/4676-0-0x0000000000400000-0x0000000000422000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/files/0x000b00000002316b-3.dat	INDICATOR_EXE_Packed_MPress
behavioral2/memory/4676-7-0x0000000000400000-0x0000000000422000-memory.dmp	INDICATOR_EXE_Packed_MPress
behavioral2/memory/1964-8-0x0000000000400000-0x0000000000422000-memory.dmp	INDICATOR_EXE_Packed_MPress

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-1-5-21-566096764-1992588923-1249862864-1000\Control Panel\International\Geo\Nation	a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df.exe

Executes dropped EXE 1 IoCs

pid	Process
1964	AhnSvc.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\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\AhnUpadate = "\"C:\\ProgramData\\AhnLab\\AhnSvc.exe\" /run"	a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df.exe

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

System Information Discovery
T1082

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4676	a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df.exe
Token: SeDebugPrivilege	1964	AhnSvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 4676 wrote to memory of 1964	4676	a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df.exe	86
PID 4676 wrote to memory of 1964	4676	a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df.exe	86
PID 4676 wrote to memory of 1964	4676	a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df.exe	86
PID 4676 wrote to memory of 1456	4676	a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df.exe	88
PID 4676 wrote to memory of 1456	4676	a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df.exe	88
PID 4676 wrote to memory of 1456	4676	a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df.exe	88

C:\Users\Admin\AppData\Local\Temp\a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df.exe
"C:\Users\Admin\AppData\Local\Temp\a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4676
- C:\ProgramData\AhnLab\AhnSvc.exe
  "C:\ProgramData\AhnLab\AhnSvc.exe" /run
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:1964
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\a05fac47c34f48fbfa1d15c46547602b193c7db8de3d9a98d305d48f7c5415df.exe" >> NUL
  2⤵
  PID:1456

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

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

AhnSvc.exe

Path C:\ProgramData\AhnLab\AhnSvc.exe
Size 126KB
SHA256 3f9c1d36b38a493d1b11d7f5f801ec48f3a15b65bcdac12256fbac8312bdf21d
MD5 d9acff4f954a4cb6048acc9b85a2ac75
SHA1 b5c2ceb56c9107a6a8f907b79266dc7a848c3adb
SHA512 be2462be677334e50daa99d641d7e1ceb88989f214d9381c100f25fc2d6711d4a55d3967001fe144a358370d6fde35e9159d1492e794c1661a4a05c6f95a3823
SSDEEP 1536:IE3qz4ayX9ioT5Xl8lQWj1vTo5G6kvBzodfjZt4ZDp/nrHr8:179l86WqGzIfjZtSDp/nrHr8
MD5 SHA1 SHA512 SSDEEP

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memory/1964-8-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/4676-0-0x0000000000400000-0x0000000000422000-memory.dmp

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memory/4676-7-0x0000000000400000-0x0000000000422000-memory.dmp

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Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads