6856ff5d30293683c5b05172fad7babd63d776a659c803eee09cebb1d69c059e

General

Target

2024-05-21_060af52f3d4629cd9f7f51a4942d0ae0_cryptolocker.exe
Size

59KB
MD5

060af52f3d4629cd9f7f51a4942d0ae0
SHA1

27b607807a7cbef13e49fd79cd3c2409d240f0a1
SHA256

6856ff5d30293683c5b05172fad7babd63d776a659c803eee09cebb1d69c059e
SHA512

5469b013e53c3709e1c358ed6ada0b3a78006548713b9fb11051355ade474e2219624d3057ee9fa7a73e361f25adb0a8580321e7ddb5f31ef31cb1974d28d790
SSDEEP

768:H6LsoEEeegiZPvEhHSG+gk5NQXtckstOOtEvwDpjhBaD3TUogs/VXpAPjp:H6QFElP6n+gou9cvMOtEvwDpjCpVXM

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2028-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_rule2
behavioral1/memory/2028-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2608-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2608-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2028-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
\Users\Admin\AppData\Local\Temp\asih.exe	CryptoLocker_set1
behavioral1/memory/2028-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2608-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2608-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

Processes:

resource	yara_rule
behavioral1/memory/2028-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
\Users\Admin\AppData\Local\Temp\asih.exe	UPX
behavioral1/memory/2028-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2608-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2608-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

Processes:

asih.exe

pid process

2608 asih.exe
Loads dropped DLL 1 IoCs

Processes:

2024-05-21_060af52f3d4629cd9f7f51a4942d0ae0_cryptolocker.exe

pid process

2028 2024-05-21_060af52f3d4629cd9f7f51a4942d0ae0_cryptolocker.exe

pid	process
2608	asih.exe

pid	process
2028	2024-05-21_060af52f3d4629cd9f7f51a4942d0ae0_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

Processes:

resource	yara_rule
behavioral1/memory/2028-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
\Users\Admin\AppData\Local\Temp\asih.exe	upx
behavioral1/memory/2028-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2608-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2608-26-0x0000000000500000-0x0000000000510000-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:

2024-05-21_060af52f3d4629cd9f7f51a4942d0ae0_cryptolocker.exe

description	pid	process	target process
PID 2028 wrote to memory of 2608	2028	2024-05-21_060af52f3d4629cd9f7f51a4942d0ae0_cryptolocker.exe	asih.exe
PID 2028 wrote to memory of 2608	2028	2024-05-21_060af52f3d4629cd9f7f51a4942d0ae0_cryptolocker.exe	asih.exe
PID 2028 wrote to memory of 2608	2028	2024-05-21_060af52f3d4629cd9f7f51a4942d0ae0_cryptolocker.exe	asih.exe
PID 2028 wrote to memory of 2608	2028	2024-05-21_060af52f3d4629cd9f7f51a4942d0ae0_cryptolocker.exe	asih.exe

C:\Users\Admin\AppData\Local\Temp\2024-05-21_060af52f3d4629cd9f7f51a4942d0ae0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-21_060af52f3d4629cd9f7f51a4942d0ae0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2608

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
59KB

MD5
05503f011baca02658505a41a769745e

SHA1
164413f9da314fff459f0f04a317ea2e27580c54

SHA256
9158061449a40e2ae355afcf147c2adc72075872a6a053cc99773799bc0e02b6

SHA512
1321a1c800e142fb21048178a92e3cc0f7e8a262dd0576c87cc0f6b05afc00e64762b9ae0fde26f2951939f5ddf58523d2147711b9840bc6c893ed8c3ed3417e

Download Submit
memory/2028-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2028-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2028-2-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2028-9-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2028-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2608-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2608-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2608-18-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2608-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads