29d590b5646ae64651fa1e55ec615a724685293dbedf71cd0dce522c3ad847ad

General

Target

2024-05-24_84681b09e89c2268550de5b499a96014_cryptolocker.exe
Size

64KB
MD5

84681b09e89c2268550de5b499a96014
SHA1

5590a403c0b5b47065c37361cd85f513c7676301
SHA256

29d590b5646ae64651fa1e55ec615a724685293dbedf71cd0dce522c3ad847ad
SHA512

72950a2624ce0298de631cffe87f97037be7b4678c01d352da3fccf9bfbe847513aa744e9111cff897bd5cd6ac185d8a440335a57dc09e80a2be162fd2ffeaca
SSDEEP

1536:P8mnK6QFElP6n+gymddpMOtEvwDpjYZ8xDwm:1nK6a+qdOOtEvwDpjV

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2128-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2128-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2128-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2268-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2268-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2128-0-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2128-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2128-16-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2268-17-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1
behavioral1/memory/2268-27-0x0000000000500000-0x000000000050F311-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2128-0-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2128-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp	UPX
behavioral1/memory/2128-16-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2268-17-0x0000000000500000-0x000000000050F311-memory.dmp	UPX
behavioral1/memory/2268-27-0x0000000000500000-0x000000000050F311-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2268 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-24_84681b09e89c2268550de5b499a96014_cryptolocker.exe

pid process

2128 2024-05-24_84681b09e89c2268550de5b499a96014_cryptolocker.exe

pid	process
2268	asih.exe

pid	process
2128	2024-05-24_84681b09e89c2268550de5b499a96014_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2128-0-0x0000000000500000-0x000000000050F311-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2128-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp	upx
behavioral1/memory/2128-16-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2268-17-0x0000000000500000-0x000000000050F311-memory.dmp	upx
behavioral1/memory/2268-27-0x0000000000500000-0x000000000050F311-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:

2024-05-24_84681b09e89c2268550de5b499a96014_cryptolocker.exe

description	pid	process	target process
PID 2128 wrote to memory of 2268	2128	2024-05-24_84681b09e89c2268550de5b499a96014_cryptolocker.exe	asih.exe
PID 2128 wrote to memory of 2268	2128	2024-05-24_84681b09e89c2268550de5b499a96014_cryptolocker.exe	asih.exe
PID 2128 wrote to memory of 2268	2128	2024-05-24_84681b09e89c2268550de5b499a96014_cryptolocker.exe	asih.exe
PID 2128 wrote to memory of 2268	2128	2024-05-24_84681b09e89c2268550de5b499a96014_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-24_84681b09e89c2268550de5b499a96014_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-24_84681b09e89c2268550de5b499a96014_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2128
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2268

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
64KB

MD5
cb066015866ea3a6f00b1329edfc2918

SHA1
58b1a7cfa2fabbd6b018b1fbcc8ff4dfa89d416d

SHA256
724a2128f81846b066a6db82bb0c7e2c0a0efea05525dffc0155587b6058852c

SHA512
29b3d0b6f93bb18eb8006924cfd51544e606a7b5a0eb3eba262926542ad5ddb651335c10873b9366fd336049fd46c937cc4bab50b4da6371acc255dbca67e119

Download Submit
memory/2128-0-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2128-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2128-8-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2128-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2128-13-0x0000000001EA0000-0x0000000001EB0000-memory.dmp

Filesize
64KB

Download
memory/2128-16-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2268-17-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download
memory/2268-26-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/2268-19-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2268-27-0x0000000000500000-0x000000000050F311-memory.dmp

Filesize
60KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads