d5f148a36a5a2fb0097dffe00938ba9614b2e91a3813accf7fe9466eedda4f59

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-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 5 IoCs

resource	yara_rule
behavioral1/memory/2212-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2212-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000800000001222b-11.dat	CryptoLocker_rule2
behavioral1/memory/2160-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2160-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2212-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2212-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000800000001222b-11.dat	CryptoLocker_set1
behavioral1/memory/2160-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2160-27-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2212-0-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2212-15-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/files/0x000800000001222b-11.dat	UPX
behavioral1/memory/2160-17-0x0000000000500000-0x000000000050F000-memory.dmp	UPX
behavioral1/memory/2160-27-0x0000000000500000-0x000000000050F000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2160	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2212	2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2212-0-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2212-15-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/files/0x000800000001222b-11.dat	upx
behavioral1/memory/2160-17-0x0000000000500000-0x000000000050F000-memory.dmp	upx
behavioral1/memory/2160-27-0x0000000000500000-0x000000000050F000-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 4 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 2160	2212	2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe	28
PID 2212 wrote to memory of 2160	2212	2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe	28
PID 2212 wrote to memory of 2160	2212	2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe	28
PID 2212 wrote to memory of 2160	2212	2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe	28

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⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2212
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2160

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

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

Filesize
89KB

MD5
563327fa506c0c853d6d334cf7249393

SHA1
b104a485798b965ba645b37ec7139110b1afa934

SHA256
6496b95e622029c920e5874ae7a5d4f4c3efd7417d61900d212c9337f06140ac

SHA512
3bd6f0ceb9be0903ee06564add782291e23943315b3017e4700de294fb7c535c30bf5fe777b202f5f431d52db0cfecb5a5ceeae2781bb85cf471d5f6a8552f9a

Download Submit
memory/2160-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2160-19-0x0000000000600000-0x0000000000606000-memory.dmp

Filesize
24KB

Download
memory/2160-23-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2160-27-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2212-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2212-1-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2212-2-0x0000000000490000-0x0000000000496000-memory.dmp

Filesize
24KB

Download
memory/2212-4-0x0000000000360000-0x0000000000366000-memory.dmp

Filesize
24KB

Download
memory/2212-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2212-13-0x00000000026C0000-0x00000000026CF000-memory.dmp

Filesize
60KB

Download
memory/2212-28-0x00000000026C0000-0x00000000026CF000-memory.dmp

Filesize
60KB

Download