c33e235028ce92f63762d4ea3c68980aef3c1cf99899bba3e7f5ec4409476d46

General

Target

ac5f0dcd478769e573281cf2d4b2da60N.exe
Size

59KB
MD5

ac5f0dcd478769e573281cf2d4b2da60
SHA1

3709476b1887e006653fab62a4ccbc092d080648
SHA256

c33e235028ce92f63762d4ea3c68980aef3c1cf99899bba3e7f5ec4409476d46
SHA512

f200e2f38c86fc56620fb6b8b5ea944d24e602792637ec72faa4d7b356e796d0abb2b93614640518b58fb25d69d708d64bb0a2b0dda95b1eb836ef402f24d463
SSDEEP

1536:3+ZgwRdiE8cO4p1xRjfTvSq5r3ZiIZ4nouy8uh1aQ3:OeodiUO4p13b9HiIeoutuh1aQ3

Score

7^/10

defense_evasion discovery persistence upx

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1500	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
2692	AhnSvc.exe

Loads dropped DLL 2 IoCs

pid	Process
2280	ac5f0dcd478769e573281cf2d4b2da60N.exe
2280	ac5f0dcd478769e573281cf2d4b2da60N.exe

UPX packed file 7 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2280-0-0x0000000000890000-0x00000000008B7000-memory.dmp	upx
behavioral1/files/0x0008000000016ca2-4.dat	upx
behavioral1/memory/2280-8-0x0000000000130000-0x0000000000157000-memory.dmp	upx
behavioral1/memory/2280-11-0x0000000000890000-0x00000000008B7000-memory.dmp	upx
behavioral1/memory/2692-15-0x00000000003B0000-0x00000000003D7000-memory.dmp	upx
behavioral1/memory/2692-17-0x00000000003B0000-0x00000000003D7000-memory.dmp	upx
behavioral1/memory/2280-21-0x0000000000890000-0x00000000008B7000-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"	ac5f0dcd478769e573281cf2d4b2da60N.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

System Location Discovery: System Language Discovery 1 TTPs 2 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	ac5f0dcd478769e573281cf2d4b2da60N.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2280	ac5f0dcd478769e573281cf2d4b2da60N.exe
Token: SeDebugPrivilege	2692	AhnSvc.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2280 wrote to memory of 2692	2280	ac5f0dcd478769e573281cf2d4b2da60N.exe	30
PID 2280 wrote to memory of 2692	2280	ac5f0dcd478769e573281cf2d4b2da60N.exe	30
PID 2280 wrote to memory of 2692	2280	ac5f0dcd478769e573281cf2d4b2da60N.exe	30
PID 2280 wrote to memory of 2692	2280	ac5f0dcd478769e573281cf2d4b2da60N.exe	30
PID 2280 wrote to memory of 1500	2280	ac5f0dcd478769e573281cf2d4b2da60N.exe	32
PID 2280 wrote to memory of 1500	2280	ac5f0dcd478769e573281cf2d4b2da60N.exe	32
PID 2280 wrote to memory of 1500	2280	ac5f0dcd478769e573281cf2d4b2da60N.exe	32
PID 2280 wrote to memory of 1500	2280	ac5f0dcd478769e573281cf2d4b2da60N.exe	32

C:\Users\Admin\AppData\Local\Temp\ac5f0dcd478769e573281cf2d4b2da60N.exe
"C:\Users\Admin\AppData\Local\Temp\ac5f0dcd478769e573281cf2d4b2da60N.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2280
- C:\ProgramData\AhnLab\AhnSvc.exe
  "C:\ProgramData\AhnLab\AhnSvc.exe" /run
  2⤵
  - Executes dropped EXE
  - Suspicious use of AdjustPrivilegeToken
  PID:2692
- C:\Windows\SysWOW64\cmd.exe
  "C:\Windows\system32\cmd.exe" /c del /q "C:\Users\Admin\AppData\Local\Temp\ac5f0dcd478769e573281cf2d4b2da60N.exe" >> NUL
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1500

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

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\ProgramData\AhnLab\AhnSvc.exe

Filesize
59KB

MD5
46f629e8703f69da8993ea7d984a2feb

SHA1
b6951e857377ef5bdb1bdba276329395a77c1024

SHA256
b6f707a848685a51bc70f32aebe0458efdb5d1478c56cae584ef410a2fd17f44

SHA512
8b90071efaffacba948d51eadf7157821451309ed442fed0d1c0fb33ac11f10a73cb1fa9aac7f17476f5fc7b2d1823b7e1b5a8144fb7b150fecd25623fee2c68

Download Submit
memory/2280-0-0x0000000000890000-0x00000000008B7000-memory.dmp

Filesize
156KB

Download
memory/2280-9-0x0000000000130000-0x0000000000157000-memory.dmp

Filesize
156KB

Download
memory/2280-8-0x0000000000130000-0x0000000000157000-memory.dmp

Filesize
156KB

Download
memory/2280-11-0x0000000000890000-0x00000000008B7000-memory.dmp

Filesize
156KB

Download
memory/2280-12-0x0000000000130000-0x0000000000157000-memory.dmp

Filesize
156KB

Download
memory/2280-13-0x0000000000130000-0x0000000000157000-memory.dmp

Filesize
156KB

Download
memory/2280-21-0x0000000000890000-0x00000000008B7000-memory.dmp

Filesize
156KB

Download
memory/2692-15-0x00000000003B0000-0x00000000003D7000-memory.dmp

Filesize
156KB

Download
memory/2692-17-0x00000000003B0000-0x00000000003D7000-memory.dmp

Filesize
156KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads