2f8c8adc872d77bf4cbc46bd3f197fe9a3f71f511b3bb9e8af96f83fd7f509e6

Resubmissions

29-10-2024 22:04

241029-1yx95a1aqg 10

25-07-2024 19:49

240725-yjp9vs1bmr 10

Analysis

max time kernel
121s
max time network
125s
platform
windows7_x64
resource
win7-20240903-en
resource tags

arch:x64arch:x86image:win7-20240903-enlocale:en-usos:windows7-x64system
submitted
29-10-2024 22:04

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General

Target

retun.exe
Size

200.0MB
MD5

57bfb36b08a68eacecc64d77211b69b9
SHA1

db6ef4199dc49868b3bf713915057e6721c8b7e5
SHA256

2f8c8adc872d77bf4cbc46bd3f197fe9a3f71f511b3bb9e8af96f83fd7f509e6
SHA512

bcb3119f72bda2b9a247bb695154055ad74708eb444d2bd25400847fe8112da9b8210d0df94f71b4daec18776ca1948d8702f17f766234830d0a4dcf811f2f7a
SSDEEP

196608:1W++z9hoy6EnWLL0kiR+dy/YXsK0hn6ksV5:1WXRWyuPMR+dyLhO5

Score

7^/10

discovery upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x00050000000195a8-22.dat	acprotect

Loads dropped DLL 1 IoCs

pid	Process
1284	retun.exe

UPX packed file 2 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x00050000000195a8-22.dat	upx
behavioral1/memory/1284-24-0x0000000074A20000-0x0000000074F2B000-memory.dmp	upx

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	retun.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	retun.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

description	pid	Process
Token: 33	1336	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1336	AUDIODG.EXE
Token: 33	1336	AUDIODG.EXE
Token: SeIncBasePriorityPrivilege	1336	AUDIODG.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2156 wrote to memory of 1284	2156	retun.exe	30
PID 2156 wrote to memory of 1284	2156	retun.exe	30
PID 2156 wrote to memory of 1284	2156	retun.exe	30
PID 2156 wrote to memory of 1284	2156	retun.exe	30

C:\Users\Admin\AppData\Local\Temp\retun.exe
"C:\Users\Admin\AppData\Local\Temp\retun.exe"
1⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2156
- C:\Users\Admin\AppData\Local\Temp\retun.exe
  "C:\Users\Admin\AppData\Local\Temp\retun.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  PID:1284

C:\Windows\explorer.exe
"C:\Windows\explorer.exe"
1⤵
PID:1256

C:\Windows\system32\AUDIODG.EXE
C:\Windows\system32\AUDIODG.EXE 0x4fc
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:1336

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\_MEI21562\python311.dll

Filesize
1.4MB

MD5
bc5d15277419e8f86bb0074037bd359f

SHA1
1504051c83b0fee4c8988210b4d4dc32b84ada27

SHA256
726575b0c9e1882e56d2b16580999246a735941353a528ac35afdc549059396b

SHA512
a9ba3a4bc1dc20f38dfa38e72701bf6e66a6bd0caced43094301a05dfc3bb93a7ae6a989da54b98d5de7b11e317447ea6232a4af19531de6906f9c2cf45370c0

Download Submit
memory/1284-24-0x0000000074A20000-0x0000000074F2B000-memory.dmp

Filesize
5.0MB

Download