c09aff72ff469772bd65dfcd049fc74e243fae9a91686b16e26a0562519703d2

General

Target

2024-04-27_2c8f03e6b4e0d6b2d7657a86b81b8ca6_cryptolocker.exe
Size

89KB
MD5

2c8f03e6b4e0d6b2d7657a86b81b8ca6
SHA1

51b3c4547201b48e223cb183a5ff5125b13b4000
SHA256

c09aff72ff469772bd65dfcd049fc74e243fae9a91686b16e26a0562519703d2
SHA512

0d0d8e9b27592584c6a9731337d650265b788ebe86f67447ef062e95530b5e4d0f2c654062ad397ee8498a6948496e6facee949af166f42b70e40bbc53cd1d24
SSDEEP

1536:n6QFElP6n+g9u9cvMOtEvwDpjYYTjipvF2bx1PQAAL3:n6a+1SEOtEvwDpjYYvQd2P0

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2848-13-0x0000000002480000-0x0000000002490000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2848-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2536-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2536-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2848-13-0x0000000002480000-0x0000000002490000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2848-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2536-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2536-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2848-13-0x0000000002480000-0x0000000002490000-memory.dmp	UPX
behavioral1/memory/2848-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2536-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2536-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2536 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-04-27_2c8f03e6b4e0d6b2d7657a86b81b8ca6_cryptolocker.exe

pid process

2848 2024-04-27_2c8f03e6b4e0d6b2d7657a86b81b8ca6_cryptolocker.exe

pid	process
2536	asih.exe

pid	process
2848	2024-04-27_2c8f03e6b4e0d6b2d7657a86b81b8ca6_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2848-13-0x0000000002480000-0x0000000002490000-memory.dmp	upx
behavioral1/memory/2848-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2536-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2536-26-0x0000000000500000-0x0000000000510000-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:

2024-04-27_2c8f03e6b4e0d6b2d7657a86b81b8ca6_cryptolocker.exe

description	pid	process	target process
PID 2848 wrote to memory of 2536	2848	2024-04-27_2c8f03e6b4e0d6b2d7657a86b81b8ca6_cryptolocker.exe	asih.exe
PID 2848 wrote to memory of 2536	2848	2024-04-27_2c8f03e6b4e0d6b2d7657a86b81b8ca6_cryptolocker.exe	asih.exe
PID 2848 wrote to memory of 2536	2848	2024-04-27_2c8f03e6b4e0d6b2d7657a86b81b8ca6_cryptolocker.exe	asih.exe
PID 2848 wrote to memory of 2536	2848	2024-04-27_2c8f03e6b4e0d6b2d7657a86b81b8ca6_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-04-27_2c8f03e6b4e0d6b2d7657a86b81b8ca6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-27_2c8f03e6b4e0d6b2d7657a86b81b8ca6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2848

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2536

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
89KB

MD5
3c522e1156364c842d134e7f482ac560

SHA1
5f0167804dc2deaef05a6ce0570a2fa5db75f481

SHA256
accecbf532f35e63aef1cb3cc5d518379cd03c73699d13cdac30f7315153071b

SHA512
d0783c5860447dfe660fd3a365f7625f47a158fa2c180f7484442a2d507483a1d69c9e4313083a0b80bf1a96c26fecbd9a78c8149f2ecd890d5095e3f53c6fe1

Download Submit
memory/2536-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2536-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2848-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2848-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2848-2-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2848-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2848-13-0x0000000002480000-0x0000000002490000-memory.dmp

Filesize
64KB

Download
memory/2848-16-0x0000000000500000-0x0000000000510000-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