03e83f47efbbec7a8a3d16ed54af8fb4cf3c1f6e285558e3df9143402c2a4a4e

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240729-en
resource tags

arch:x64arch:x86image:win7-20240729-enlocale:en-usos:windows7-x64system
submitted
19-09-2024 05:33

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General

Target

2024-09-19_b670c00647ed2421faec647181a743b9_cryptolocker.exe
Size

76KB
MD5

b670c00647ed2421faec647181a743b9
SHA1

9735472f608138a1647faf4157901b71a2b98b3b
SHA256

03e83f47efbbec7a8a3d16ed54af8fb4cf3c1f6e285558e3df9143402c2a4a4e
SHA512

298f5a6e66af1c651379dd6f6f784f86f9e94803adaf0b43f8243375dea7b1aefe7819b0b3be303f5553dcac1c35b0457fb47816bd95200055052fff97afeea2
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsal81Gp:1nK6a+qdOOtEvwDpjE

Score

7^/10

discovery upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
2772	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2640	2024-09-19_b670c00647ed2421faec647181a743b9_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2640-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2640-15-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/files/0x00080000000120fe-16.dat	upx
behavioral1/memory/2640-13-0x0000000002840000-0x0000000002850000-memory.dmp	upx
behavioral1/memory/2772-26-0x0000000000500000-0x000000000050F311-memory.dmp	upx

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 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	2024-09-19_b670c00647ed2421faec647181a743b9_cryptolocker.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	asih.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2640 wrote to memory of 2772	2640	2024-09-19_b670c00647ed2421faec647181a743b9_cryptolocker.exe	30
PID 2640 wrote to memory of 2772	2640	2024-09-19_b670c00647ed2421faec647181a743b9_cryptolocker.exe	30
PID 2640 wrote to memory of 2772	2640	2024-09-19_b670c00647ed2421faec647181a743b9_cryptolocker.exe	30
PID 2640 wrote to memory of 2772	2640	2024-09-19_b670c00647ed2421faec647181a743b9_cryptolocker.exe	30

C:\Users\Admin\AppData\Local\Temp\2024-09-19_b670c00647ed2421faec647181a743b9_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-09-19_b670c00647ed2421faec647181a743b9_cryptolocker.exe"
1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:2640
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  - System Location Discovery: System Language Discovery
  PID:2772

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

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\asih.exe

Filesize
76KB

MD5
125ef0eff846761072aac5ee295f8e10

SHA1
62d0c66d057e8c9039b9627b8d52bc2d4051fa2d

SHA256
2328ef384d55c9e2e9d00a0898383fb78de475d853184daa9b0822d2dc173dee

SHA512
423d4c90d0ee40bae7da22daa3dc7cc98a680495fd20fd5de172a91568ec7e44bbe51468a3f759b4776167dffbbeb424c2afbed4f074571d6c1f640e13d84aa6

Download Submit
memory/2640-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2640-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2640-1-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2640-9-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2640-15-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2640-13-0x0000000002840000-0x0000000002850000-memory.dmp

Filesize
64KB

Download
memory/2772-25-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2772-18-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2772-26-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download