8c204424ac62ff49d98d90f1e86867e022da5ca6466d58dc079eb93e06948379

General

Target

8fd63622315516d3833bcc44b7ebc090N.exe
Size

59KB
MD5

8fd63622315516d3833bcc44b7ebc090
SHA1

22222b28ad2514507fd74f258a1e94671bad17db
SHA256

8c204424ac62ff49d98d90f1e86867e022da5ca6466d58dc079eb93e06948379
SHA512

69897308f096d8766d588fc86fd5355f2a5fc35e4a675bbb4914cf3b3ebfabc4cf2209b0c798b31cd7a8ab0742168faa91b2843c56d84fc81187d9e51bcc691c
SSDEEP

1536:3+ZgwRdiE8cO4p1xRjfTvSq5r3ZiIZ4nouy8uh1aQJ:OeodiUO4p13b9HiIeoutuh1aQJ

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-1-5-21-656926755-4116854191-210765258-1000\Control Panel\International\Geo\Nation	8fd63622315516d3833bcc44b7ebc090N.exe

Executes dropped EXE 1 IoCs

pid	Process
4556	AhnSvc.exe

UPX packed file 6 IoCs

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

upx

resource	yara_rule
behavioral2/memory/2516-0-0x0000000000F00000-0x0000000000F27000-memory.dmp	upx
behavioral2/memory/4556-4-0x0000000000A30000-0x0000000000A57000-memory.dmp	upx
behavioral2/files/0x00080000000234b7-3.dat	upx
behavioral2/memory/2516-8-0x0000000000F00000-0x0000000000F27000-memory.dmp	upx
behavioral2/memory/4556-9-0x0000000000A30000-0x0000000000A57000-memory.dmp	upx
behavioral2/memory/4556-10-0x0000000000A30000-0x0000000000A57000-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"	8fd63622315516d3833bcc44b7ebc090N.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	8fd63622315516d3833bcc44b7ebc090N.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	2516	8fd63622315516d3833bcc44b7ebc090N.exe
Token: SeDebugPrivilege	4556	AhnSvc.exe

Suspicious use of WriteProcessMemory 6 IoCs

description	pid	Process	procid_target
PID 2516 wrote to memory of 4556	2516	8fd63622315516d3833bcc44b7ebc090N.exe	83
PID 2516 wrote to memory of 4556	2516	8fd63622315516d3833bcc44b7ebc090N.exe	83
PID 2516 wrote to memory of 4556	2516	8fd63622315516d3833bcc44b7ebc090N.exe	83
PID 2516 wrote to memory of 2588	2516	8fd63622315516d3833bcc44b7ebc090N.exe	85
PID 2516 wrote to memory of 2588	2516	8fd63622315516d3833bcc44b7ebc090N.exe	85
PID 2516 wrote to memory of 2588	2516	8fd63622315516d3833bcc44b7ebc090N.exe	85

C:\Users\Admin\AppData\Local\Temp\8fd63622315516d3833bcc44b7ebc090N.exe
"C:\Users\Admin\AppData\Local\Temp\8fd63622315516d3833bcc44b7ebc090N.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:2516
- 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:4556
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\8fd63622315516d3833bcc44b7ebc090N.exe" >> NUL
  2⤵
  - System Location Discovery: System Language Discovery
  PID:2588

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
efc69e42b297a3de5be546b79aabe39b

SHA1
60ef549be331770748d64bb4f10e46e2c242ecea

SHA256
7a4da78e15dc3f9bd8a962f34a1c517ccd937516fbae2eb28c7a06ede407a5c7

SHA512
64f7d0137d9b860279c0cf8a01cbac7500428db863a0ee69f81fbfff8b3f783dd4d18a29b70ad7e553786867185d20f6c8d7965003468fbcc66967a52646dba2

Download Submit
memory/2516-0-0x0000000000F00000-0x0000000000F27000-memory.dmp

Filesize
156KB

Download
memory/2516-8-0x0000000000F00000-0x0000000000F27000-memory.dmp

Filesize
156KB

Download
memory/4556-4-0x0000000000A30000-0x0000000000A57000-memory.dmp

Filesize
156KB

Download
memory/4556-9-0x0000000000A30000-0x0000000000A57000-memory.dmp

Filesize
156KB

Download
memory/4556-10-0x0000000000A30000-0x0000000000A57000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads