d5f148a36a5a2fb0097dffe00938ba9614b2e91a3813accf7fe9466eedda4f59

Analysis

max time kernel
152s
max time network
162s
platform
windows10-2004_x64
resource
win10v2004-20240226-en
resource tags

arch:x64arch:x86image:win10v2004-20240226-enlocale:en-usos:windows10-2004-x64system
submitted
15/03/2024, 06:30

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General

Target

2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe
Size

89KB
MD5

9613263e89b0913f1b35ed283af73ff5
SHA1

3df57cd2a022fe77e485cdd74a4071caea969133
SHA256

d5f148a36a5a2fb0097dffe00938ba9614b2e91a3813accf7fe9466eedda4f59
SHA512

21247b7b1812c5d9e6e1f40088b4eeabadaf9fa0ceabbd86c3ca01b575de11d6291f321c6fe550a727ffbe30261761206d3d16f5491d6b02c5248b8fd6ef700b
SSDEEP

1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgdPX:AnBdOOtEvwDpj6zZ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral2/memory/1220-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/files/0x0007000000023201-13.dat	CryptoLocker_rule2
behavioral2/memory/1220-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral2/memory/5068-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral2/memory/1220-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/files/0x0007000000023201-13.dat	CryptoLocker_set1
behavioral2/memory/1220-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral2/memory/5068-26-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral2/memory/1220-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/files/0x0007000000023201-13.dat	UPX
behavioral2/memory/1220-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral2/memory/5068-26-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

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-1-5-21-3045580317-3728985860-206385570-1000\Control Panel\International\Geo\Nation	2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe

Executes dropped EXE 1 IoCs

pid	Process
5068	asih.exe

UPX packed file 4 IoCs

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

upx

resource	yara_rule
behavioral2/memory/1220-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/files/0x0007000000023201-13.dat	upx
behavioral2/memory/1220-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral2/memory/5068-26-0x0000000000500000-0x000000000050F000-memory.dmp	upx

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

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 3 IoCs

description	pid	Process	procid_target
PID 1220 wrote to memory of 5068	1220	2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe	87
PID 1220 wrote to memory of 5068	1220	2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe	87
PID 1220 wrote to memory of 5068	1220	2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe	87

C:\Users\Admin\AppData\Local\Temp\2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe"
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1220
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:5068

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
89KB

MD5
563327fa506c0c853d6d334cf7249393

SHA1
b104a485798b965ba645b37ec7139110b1afa934

SHA256
6496b95e622029c920e5874ae7a5d4f4c3efd7417d61900d212c9337f06140ac

SHA512
3bd6f0ceb9be0903ee06564add782291e23943315b3017e4700de294fb7c535c30bf5fe777b202f5f431d52db0cfecb5a5ceeae2781bb85cf471d5f6a8552f9a

Download Submit
memory/1220-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/1220-1-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1220-2-0x00000000005A0000-0x00000000005A6000-memory.dmp

Filesize
24KB

Download
memory/1220-3-0x00000000005C0000-0x00000000005C6000-memory.dmp

Filesize
24KB

Download
memory/1220-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/5068-19-0x00000000006B0000-0x00000000006B6000-memory.dmp

Filesize
24KB

Download
memory/5068-20-0x00000000006D0000-0x00000000006D6000-memory.dmp

Filesize
24KB

Download
memory/5068-26-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download