cc2d145903dde6d9532b010c1de6039610b961bbdd970d2a98878590801ded87

General

Target

2024-05-23_34428f5106b42584f42c2e328c98f4ae_cryptolocker.exe
Size

66KB
MD5

34428f5106b42584f42c2e328c98f4ae
SHA1

37accf3a58603c374bdc937bfe06c72f7c7ba99a
SHA256

cc2d145903dde6d9532b010c1de6039610b961bbdd970d2a98878590801ded87
SHA512

d3522fa824f949e8deffd68d090335cdb17f280e1b2116b53d5d2d715ae5655382f36bd7f31d82fba8ac20640356639e01366a88bf7370ee197df9fef73ed439
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYibAoQRL:1nK6a+qdOOtEvwDpjq

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1644-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2772-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1644-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2772-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1644-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2772-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/1644-15-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2772-26-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1644-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2772-16-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/1644-15-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2772-26-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2772 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_34428f5106b42584f42c2e328c98f4ae_cryptolocker.exe

pid process

1644 2024-05-23_34428f5106b42584f42c2e328c98f4ae_cryptolocker.exe

pid	process
2772	asih.exe

pid	process
1644	2024-05-23_34428f5106b42584f42c2e328c98f4ae_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1644-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2772-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/1644-15-0x0000000000500000-0x000000000050F311-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

Suspicious use of WriteProcessMemory 4 IoCs

Processes:

2024-05-23_34428f5106b42584f42c2e328c98f4ae_cryptolocker.exe

description	pid	process	target process
PID 1644 wrote to memory of 2772	1644	2024-05-23_34428f5106b42584f42c2e328c98f4ae_cryptolocker.exe	asih.exe
PID 1644 wrote to memory of 2772	1644	2024-05-23_34428f5106b42584f42c2e328c98f4ae_cryptolocker.exe	asih.exe
PID 1644 wrote to memory of 2772	1644	2024-05-23_34428f5106b42584f42c2e328c98f4ae_cryptolocker.exe	asih.exe
PID 1644 wrote to memory of 2772	1644	2024-05-23_34428f5106b42584f42c2e328c98f4ae_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_34428f5106b42584f42c2e328c98f4ae_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_34428f5106b42584f42c2e328c98f4ae_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1644
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  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

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

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

Filesize
67KB

MD5
601187c755526daf69029b1383399364

SHA1
d40dadfbb092a667f7cd343563ff2a11dca638b8

SHA256
ee3a638ce1804d1315e46088916705cc1a8fb962f6022985124e56abf278fb17

SHA512
1dde9d413d1a337302043e3c716df52bb9df32c48c19f8a4e33e07885b8d7d50585640ac6cccc55de9d5f0819a8e5668cf21baf4019bca3c08f2c816b5e4c042

Download Submit
memory/1644-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/1644-2-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/1644-1-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/1644-9-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/1644-15-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2772-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2772-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2772-18-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

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

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads