2b608671bb4dd3371486f11cd82867ab1807022c85b45e9f2d244bb9b6b724dd

General

Target

6fd5a5b276ec833984d10066aa543240N.exe
Size

59KB
MD5

6fd5a5b276ec833984d10066aa543240
SHA1

a0576235c4d44a78e6d5f056e05fa2c0c6d9ce5d
SHA256

2b608671bb4dd3371486f11cd82867ab1807022c85b45e9f2d244bb9b6b724dd
SHA512

5e498641275153cf7afb34ff8671c12107a311785e5a74d71f65d1444b9732bc4f9c8d34d8698e7aec452355bd607099eae4de15230ee4f85c9da05e308b87f2
SSDEEP

1536:3+ZgwRdiE8cO4p1xRjfTvSq5r3ZiIZ4nouy8uh1aQQ:OeodiUO4p13b9HiIeoutuh1aQQ

Score

7^/10

defense_evasion discovery persistence upx

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-1-5-21-2392887640-1187051047-2909758433-1000\Control Panel\International\Geo\Nation	6fd5a5b276ec833984d10066aa543240N.exe

Executes dropped EXE 1 IoCs

pid	Process
4928	AhnSvc.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/3936-0-0x0000000000CC0000-0x0000000000CE7000-memory.dmp	upx
behavioral2/files/0x000900000002341b-3.dat	upx
behavioral2/memory/4928-4-0x00000000003D0000-0x00000000003F7000-memory.dmp	upx
behavioral2/memory/3936-8-0x0000000000CC0000-0x0000000000CE7000-memory.dmp	upx
behavioral2/memory/4928-9-0x00000000003D0000-0x00000000003F7000-memory.dmp	upx
behavioral2/memory/4928-10-0x00000000003D0000-0x00000000003F7000-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"	6fd5a5b276ec833984d10066aa543240N.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	6fd5a5b276ec833984d10066aa543240N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	AhnSvc.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3936	6fd5a5b276ec833984d10066aa543240N.exe
Token: SeDebugPrivilege	4928	AhnSvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 3936 wrote to memory of 4928	3936	6fd5a5b276ec833984d10066aa543240N.exe	83
PID 3936 wrote to memory of 4928	3936	6fd5a5b276ec833984d10066aa543240N.exe	83
PID 3936 wrote to memory of 4928	3936	6fd5a5b276ec833984d10066aa543240N.exe	83
PID 3936 wrote to memory of 776	3936	6fd5a5b276ec833984d10066aa543240N.exe	86
PID 3936 wrote to memory of 776	3936	6fd5a5b276ec833984d10066aa543240N.exe	86
PID 3936 wrote to memory of 776	3936	6fd5a5b276ec833984d10066aa543240N.exe	86

C:\Users\Admin\AppData\Local\Temp\6fd5a5b276ec833984d10066aa543240N.exe
"C:\Users\Admin\AppData\Local\Temp\6fd5a5b276ec833984d10066aa543240N.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3936
- C:\ProgramData\AhnLab\AhnSvc.exe
  "C:\ProgramData\AhnLab\AhnSvc.exe" /run
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  - Suspicious use of AdjustPrivilegeToken
  PID:4928
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\6fd5a5b276ec833984d10066aa543240N.exe" >> NUL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:776

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

1

T1547

Registry Run Keys / Startup Folder

1

T1547.001

Defense Evasion

Indicator Removal

1

T1070

File Deletion

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

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\ProgramData\AhnLab\AhnSvc.exe

Filesize
59KB

MD5
d116ba929ab6e59a7d655fa4ae5170ac

SHA1
db439e83807a75838f6b8373a564c560ce69c792

SHA256
5dd7b312fea6c14d81ad77da4c53debd55788af0fbb67615cc16b8a574a83698

SHA512
0593ede2b0c948bb1ef75d9b51f9e7c80da99c8a65f24b073917500f6e9bcd81a9775866a050f12b89b7b5b96d3036d75122ec8c02a40ea1e579cdd9c5caec75

Download Submit
memory/3936-0-0x0000000000CC0000-0x0000000000CE7000-memory.dmp

Filesize
156KB

Download
memory/3936-8-0x0000000000CC0000-0x0000000000CE7000-memory.dmp

Filesize
156KB

Download
memory/4928-4-0x00000000003D0000-0x00000000003F7000-memory.dmp

Filesize
156KB

Download
memory/4928-9-0x00000000003D0000-0x00000000003F7000-memory.dmp

Filesize
156KB

Download
memory/4928-10-0x00000000003D0000-0x00000000003F7000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads