0aa466f46a72ccdb4b2efd40bd80953dab932b6b6dd8c8c0e9ee1c43d3b51996

General

Target

2024-05-22_e6b953dab53384bc793c8317d9c8e632_cryptolocker.exe
Size

59KB
MD5

e6b953dab53384bc793c8317d9c8e632
SHA1

d2da865db208efd23abdc944244fd08d1fc6f5fb
SHA256

0aa466f46a72ccdb4b2efd40bd80953dab932b6b6dd8c8c0e9ee1c43d3b51996
SHA512

b36d2fa39a126f2109f82cbd0e64fe107b41c857aecf3958b2fd37e775f537e29893de120362f3250db504361de2b365c94e0b5251cb878ea5a66deb43868870
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAP6pF:H6QFElP6n+gou9cvMOtEvwDpjCpVXr

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2188-13-0x00000000005A0000-0x00000000005B0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2188-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2224-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2188-13-0x00000000005A0000-0x00000000005B0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2188-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2224-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2188-13-0x00000000005A0000-0x00000000005B0000-memory.dmp	UPX
behavioral1/memory/2188-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2224-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2224 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_e6b953dab53384bc793c8317d9c8e632_cryptolocker.exe

pid process

2188 2024-05-22_e6b953dab53384bc793c8317d9c8e632_cryptolocker.exe

pid	process
2224	asih.exe

pid	process
2188	2024-05-22_e6b953dab53384bc793c8317d9c8e632_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2188-13-0x00000000005A0000-0x00000000005B0000-memory.dmp	upx
behavioral1/memory/2188-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2224-26-0x0000000000500000-0x0000000000510000-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:

2024-05-22_e6b953dab53384bc793c8317d9c8e632_cryptolocker.exe

description	pid	process	target process
PID 2188 wrote to memory of 2224	2188	2024-05-22_e6b953dab53384bc793c8317d9c8e632_cryptolocker.exe	asih.exe
PID 2188 wrote to memory of 2224	2188	2024-05-22_e6b953dab53384bc793c8317d9c8e632_cryptolocker.exe	asih.exe
PID 2188 wrote to memory of 2224	2188	2024-05-22_e6b953dab53384bc793c8317d9c8e632_cryptolocker.exe	asih.exe
PID 2188 wrote to memory of 2224	2188	2024-05-22_e6b953dab53384bc793c8317d9c8e632_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_e6b953dab53384bc793c8317d9c8e632_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_e6b953dab53384bc793c8317d9c8e632_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2188

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2224

Network

MITRE ATT&CK Matrix ATT&CK v13

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Resource Development

Reconnaissance

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe
Filesize
60KB

MD5
1dfbe031111e98098a70d4c469ff64cf

SHA1
30cf66c4a5dc77225c14a176d00851d9a0055780

SHA256
070e24cb5192d81d9bfd1aee85491a0f42be103eb418f98449ff654fc7b456e8

SHA512
a95753899c2466d04eee06b540fe9e354ef8c4cab042edb3234a0ae37e435aed65a025b539ca4a7c932a7e4c672f7861945135d375174537ee68d12a399c4795

Download Submit
memory/2188-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2188-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2188-2-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2188-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2188-13-0x00000000005A0000-0x00000000005B0000-memory.dmp

Filesize
64KB

Download
memory/2188-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2224-18-0x00000000004B0000-0x00000000004B6000-memory.dmp

Filesize
24KB

Download
memory/2224-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2224-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v13

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Downloads