066fc54d79acb5e4c2e55d494422d2650b8df2e0e5327cd4a0b7b932781f79fb

General

Target

2024-05-21_575f7f0102adcf4a00acd3efd8b05c5a_cryptolocker.exe
Size

59KB
MD5

575f7f0102adcf4a00acd3efd8b05c5a
SHA1

b5a74f5855f8bfdeefd5005faff3ced0147219c0
SHA256

066fc54d79acb5e4c2e55d494422d2650b8df2e0e5327cd4a0b7b932781f79fb
SHA512

027332813efb56e33247b97518ce1105cad24e514e87105a166321f1d3fdefa4a5d1108b59826bb1968d2c7c58bec44306cd8f9af0ae4262966515f226896caa
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAPjP:H6QFElP6n+gou9cvMOtEvwDpjCpVXu

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1636-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1636-13-0x00000000022B0000-0x00000000022C0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1332-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1636-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1332-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1636-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1636-13-0x00000000022B0000-0x00000000022C0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1332-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1636-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1332-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1636-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/1636-13-0x00000000022B0000-0x00000000022C0000-memory.dmp	UPX
behavioral1/memory/1332-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1636-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1332-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

1332 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-21_575f7f0102adcf4a00acd3efd8b05c5a_cryptolocker.exe

pid process

1636 2024-05-21_575f7f0102adcf4a00acd3efd8b05c5a_cryptolocker.exe

pid	process
1332	asih.exe

pid	process
1636	2024-05-21_575f7f0102adcf4a00acd3efd8b05c5a_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1636-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/1636-13-0x00000000022B0000-0x00000000022C0000-memory.dmp	upx
behavioral1/memory/1332-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1636-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1332-27-0x0000000000500000-0x0000000000510000-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:

2024-05-21_575f7f0102adcf4a00acd3efd8b05c5a_cryptolocker.exe

description	pid	process	target process
PID 1636 wrote to memory of 1332	1636	2024-05-21_575f7f0102adcf4a00acd3efd8b05c5a_cryptolocker.exe	asih.exe
PID 1636 wrote to memory of 1332	1636	2024-05-21_575f7f0102adcf4a00acd3efd8b05c5a_cryptolocker.exe	asih.exe
PID 1636 wrote to memory of 1332	1636	2024-05-21_575f7f0102adcf4a00acd3efd8b05c5a_cryptolocker.exe	asih.exe
PID 1636 wrote to memory of 1332	1636	2024-05-21_575f7f0102adcf4a00acd3efd8b05c5a_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_575f7f0102adcf4a00acd3efd8b05c5a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_575f7f0102adcf4a00acd3efd8b05c5a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1636

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:1332

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
60KB

MD5
56e4ca1ccf06777865758c1fccde79dc

SHA1
bd53804faed7f8dc585bdeabbd7f5c241c46d3ca

SHA256
18277a3aa38ed9c275f33847d2c035d16039286eb44f7d1e873972a16f28e794

SHA512
2f739496ec01d7d10c5a0f752817e30e4d732a2bcdb7ca800be1fbddbdb367e7cade818029c7e660c3b7a0019663913aaf59ea8efe4b2bf6ff0ee5f16497cbd8

Download Submit
memory/1332-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1332-19-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1332-20-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/1332-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1636-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1636-1-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download
memory/1636-2-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/1636-9-0x00000000001E0000-0x00000000001E6000-memory.dmp

Filesize
24KB

Download
memory/1636-13-0x00000000022B0000-0x00000000022C0000-memory.dmp

Filesize
64KB

Download
memory/1636-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads