5a90df55146dae999268cd3a4c6916c2784c531f572100cda79fda142eeb4135

General

Target

2024-05-22_bd7a9a07e997bd4fe01f836fce69daca_cryptolocker.exe
Size

79KB
MD5

bd7a9a07e997bd4fe01f836fce69daca
SHA1

f538ed724282e3463605f5e1c520341fb602dbd3
SHA256

5a90df55146dae999268cd3a4c6916c2784c531f572100cda79fda142eeb4135
SHA512

ea36740010d81676b8b2fb704f23f46f2e32d1e55e5066ecbd874450d6e7f80785caa931877ab4b4c721dfde71a9d630a41b98a03c3ce42a140fd5ba8f57eb72
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdxPUxB14n:T6a+rdOOtEvwDpjNtHPJ

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1964-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/1964-13-0x0000000001DD0000-0x0000000001DE0000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1964-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1964-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/1964-13-0x0000000001DD0000-0x0000000001DE0000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1964-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

Processes:

resource	yara_rule
behavioral1/memory/1964-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/1964-13-0x0000000001DD0000-0x0000000001DE0000-memory.dmp	UPX
behavioral1/memory/1964-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2828 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-22_bd7a9a07e997bd4fe01f836fce69daca_cryptolocker.exe

pid process

1964 2024-05-22_bd7a9a07e997bd4fe01f836fce69daca_cryptolocker.exe

pid	process
2828	asih.exe

pid	process
1964	2024-05-22_bd7a9a07e997bd4fe01f836fce69daca_cryptolocker.exe

UPX packed file 6 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/1964-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/1964-13-0x0000000001DD0000-0x0000000001DE0000-memory.dmp	upx
behavioral1/memory/1964-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2828-27-0x0000000000500000-0x0000000000510000-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:

2024-05-22_bd7a9a07e997bd4fe01f836fce69daca_cryptolocker.exe

description	pid	process	target process
PID 1964 wrote to memory of 2828	1964	2024-05-22_bd7a9a07e997bd4fe01f836fce69daca_cryptolocker.exe	asih.exe
PID 1964 wrote to memory of 2828	1964	2024-05-22_bd7a9a07e997bd4fe01f836fce69daca_cryptolocker.exe	asih.exe
PID 1964 wrote to memory of 2828	1964	2024-05-22_bd7a9a07e997bd4fe01f836fce69daca_cryptolocker.exe	asih.exe
PID 1964 wrote to memory of 2828	1964	2024-05-22_bd7a9a07e997bd4fe01f836fce69daca_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-22_bd7a9a07e997bd4fe01f836fce69daca_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-22_bd7a9a07e997bd4fe01f836fce69daca_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1964

C:\Users\Admin\AppData\Local\Temp\asih.exe
"C:\Users\Admin\AppData\Local\Temp\asih.exe"
2⤵
- Executes dropped EXE
PID:2828

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
79KB

MD5
9b2323df24f13288b33129273fe494ed

SHA1
a90c6cda52da0c1a929c06e1a3579a1f0854e207

SHA256
ca929f22ef3c4a530122d229ec3f40c3669ff8da288f5d69730d49f02993a82c

SHA512
9b2ee9b37a44ec0bc80403f0e548076f8d26c537f2fc97ae95b0df0a4e67841792a4257e3ea23b59db985bbf790f87fd8e437453fc6b44f6cd006ada20027bea

Download Submit
memory/1964-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1964-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1964-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1964-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1964-13-0x0000000001DD0000-0x0000000001DE0000-memory.dmp

Filesize
64KB

Download
memory/1964-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2828-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2828-19-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2828-26-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2828-27-0x0000000000500000-0x0000000000510000-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