b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647

Analysis

max time kernel
150s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20240508-en
resource tags

arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system
submitted
30/06/2024, 01:09

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General

Target

b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647.exe
Size

59KB
MD5

d531be5e4a8a1cd827a401bf52b07ab8
SHA1

d6d6f10ce2d6eea3e42b7b025a942608dcf9accc
SHA256

b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647
SHA512

2779bc131b9cfe9283cbf01d4bd8393e2c95c3f20335b60cc90bbc1899e6b43178da570c26d9cd28ea0ee83dccc0b69d25a7dc445ff9460ee8aac021a9bb4a72
SSDEEP

1536:3+ZgwRdiE8cO4p1xRjfTvSq5r3ZiIZ4nouy8uh1aQk:OeodiUO4p13b9HiIeoutuh1aQk

Score

9^/10

persistence upx

Malware Config

Signatures

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral2/memory/2176-0-0x0000000000780000-0x00000000007A7000-memory.dmp	UPX
behavioral2/files/0x00070000000233cb-4.dat	UPX
behavioral2/memory/3380-5-0x0000000000150000-0x0000000000177000-memory.dmp	UPX
behavioral2/memory/2176-9-0x0000000000780000-0x00000000007A7000-memory.dmp	UPX
behavioral2/memory/3380-10-0x0000000000150000-0x0000000000177000-memory.dmp	UPX
behavioral2/memory/3380-11-0x0000000000150000-0x0000000000177000-memory.dmp	UPX

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-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation	b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647.exe

Executes dropped EXE 1 IoCs

pid	Process
3380	AhnSvc.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2176-0-0x0000000000780000-0x00000000007A7000-memory.dmp	upx
behavioral2/files/0x00070000000233cb-4.dat	upx
behavioral2/memory/3380-5-0x0000000000150000-0x0000000000177000-memory.dmp	upx
behavioral2/memory/2176-9-0x0000000000780000-0x00000000007A7000-memory.dmp	upx
behavioral2/memory/3380-10-0x0000000000150000-0x0000000000177000-memory.dmp	upx
behavioral2/memory/3380-11-0x0000000000150000-0x0000000000177000-memory.dmp	upx

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"	b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647.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	2176	b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647.exe
Token: SeDebugPrivilege	3380	AhnSvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2176 wrote to memory of 3380	2176	b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647.exe	80
PID 2176 wrote to memory of 3380	2176	b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647.exe	80
PID 2176 wrote to memory of 3380	2176	b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647.exe	80
PID 2176 wrote to memory of 4556	2176	b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647.exe	81
PID 2176 wrote to memory of 4556	2176	b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647.exe	81
PID 2176 wrote to memory of 4556	2176	b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647.exe	81

C:\Users\Admin\AppData\Local\Temp\b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647.exe
"C:\Users\Admin\AppData\Local\Temp\b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2176
- C:\ProgramData\AhnLab\AhnSvc.exe
  "C:\ProgramData\AhnLab\AhnSvc.exe" /run
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:3380
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\b485e991eb513b8880bcf626f02223dfed897cef9045b01eac50c2fd84915647.exe" >> NUL
  2⤵
  PID:4556

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

C:\ProgramData\AhnLab\AhnSvc.exe

Filesize
59KB

MD5
98d0dcb75b23c20b94856723b1e9c5c7

SHA1
6dec3e66544c4dce0e857f7c948513dd1fee3d5a

SHA256
cb5657361cd06e094746cd1df27580f9cc7f20409c9c6c739bb100844be74e24

SHA512
58c1c4ced5103925dc648160431b105dbd7b21f24142575e21ab54f5c5298a40d23c1a1416a9a55c41b4417e5b7ebc5a83214ed638dc179da2eeb0019a9d8be4

Download Submit
memory/2176-0-0x0000000000780000-0x00000000007A7000-memory.dmp

Filesize
156KB

Download
memory/2176-9-0x0000000000780000-0x00000000007A7000-memory.dmp

Filesize
156KB

Download
memory/3380-5-0x0000000000150000-0x0000000000177000-memory.dmp

Filesize
156KB

Download
memory/3380-10-0x0000000000150000-0x0000000000177000-memory.dmp

Filesize
156KB

Download
memory/3380-11-0x0000000000150000-0x0000000000177000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads