a1b684467e33032d27800565b7da334ce67c63bf18890b279497ef1d512e432b

General

Target

2024-05-23_0edbaa3f74097eff1db0bccabba51756_cryptolocker.exe
Size

79KB
MD5

0edbaa3f74097eff1db0bccabba51756
SHA1

6dd0c3efa0150a9e5934e2cd5aa61943fde11cc5
SHA256

a1b684467e33032d27800565b7da334ce67c63bf18890b279497ef1d512e432b
SHA512

2460f86d41b1285ee094ec9b86049c52c6a7380c178fecc619b544abd46af945a48106a55a83adc75d9cdafe5dba98bf47ee41e0ab980842acb219370b3d5723
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdxPUxB1d:T6a+rdOOtEvwDpjNtHPy

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1968-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1968-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1968-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3056-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3056-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1968-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1968-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1968-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3056-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3056-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1968-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/1968-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	UPX
behavioral1/memory/1968-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3056-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3056-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

3056 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-23_0edbaa3f74097eff1db0bccabba51756_cryptolocker.exe

pid process

1968 2024-05-23_0edbaa3f74097eff1db0bccabba51756_cryptolocker.exe

pid	process
3056	asih.exe

pid	process
1968	2024-05-23_0edbaa3f74097eff1db0bccabba51756_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1968-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/1968-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp	upx
behavioral1/memory/1968-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3056-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3056-27-0x0000000000500000-0x0000000000510000-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_0edbaa3f74097eff1db0bccabba51756_cryptolocker.exe

description	pid	process	target process
PID 1968 wrote to memory of 3056	1968	2024-05-23_0edbaa3f74097eff1db0bccabba51756_cryptolocker.exe	asih.exe
PID 1968 wrote to memory of 3056	1968	2024-05-23_0edbaa3f74097eff1db0bccabba51756_cryptolocker.exe	asih.exe
PID 1968 wrote to memory of 3056	1968	2024-05-23_0edbaa3f74097eff1db0bccabba51756_cryptolocker.exe	asih.exe
PID 1968 wrote to memory of 3056	1968	2024-05-23_0edbaa3f74097eff1db0bccabba51756_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-23_0edbaa3f74097eff1db0bccabba51756_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-23_0edbaa3f74097eff1db0bccabba51756_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1968

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:3056

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
79KB

MD5
23be7470d26d054e66a6084495bdd134

SHA1
c2b27453b303cab6b330ad712418dd4eb7da5c28

SHA256
162ff611999a104d294d3e97c855ccb60ddb3bce74cb11db38d3ec6b6055d717

SHA512
b2d517551857824ef9035614575ee0bb8c4545aeed59259e798cc783e445ff4f617d4f8db638c8872c5a26e7f19030f1035a7b27613d3a9e9a15202584479036

Download Submit
memory/1968-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1968-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1968-2-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download
memory/1968-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1968-13-0x0000000002BC0000-0x0000000002BD0000-memory.dmp

Filesize
64KB

Download
memory/1968-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3056-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3056-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/3056-19-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/3056-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads