8b44a05628b2e7a69b924f5990bb63488db0f14ca6ca6a94eddaa0cc38101729

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
14/06/2024, 07:43

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General

Target

2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe
Size

53KB
MD5

722f7b8cc6b978544093bd94c61e5525
SHA1

6ef9f15838bdb69b524e7c6f384a188690479585
SHA256

8b44a05628b2e7a69b924f5990bb63488db0f14ca6ca6a94eddaa0cc38101729
SHA512

c66bef43835d5d5680f97081043893690871d381304c48bd331e9714203f6efebf7223ad1761cccc0b54c91bd1fe5696d9581d0ad62cae83023c74d1377c8a21
SSDEEP

768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOmb:z6QFElP6n+gKmddpMOtEvwDpj31imb

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000014539-11.dat	CryptoLocker_rule2
behavioral1/memory/2680-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1936-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2680-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000014539-11.dat	CryptoLocker_set1
behavioral1/memory/2680-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1936-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2680-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0009000000014539-11.dat	UPX
behavioral1/memory/2680-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/1936-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2680-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2680	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1936	2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x0009000000014539-11.dat	upx
behavioral1/memory/2680-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/1936-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/2680-26-0x0000000000500000-0x0000000000510000-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

description	pid	Process	procid_target
PID 1936 wrote to memory of 2680	1936	2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe	28
PID 1936 wrote to memory of 2680	1936	2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe	28
PID 1936 wrote to memory of 2680	1936	2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe	28
PID 1936 wrote to memory of 2680	1936	2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1936
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2680

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\asih.exe

Filesize
53KB

MD5
9d581fc7b50055cc6e475316c42e8c74

SHA1
c4538f4400031651f6e9593e723fd8ebc1503101

SHA256
3c58b4a31941112d1bd0aa421bc292ae8cf180073295ed4150b42cc7a4c34a6f

SHA512
4b1c0ba4d7136a72b1ed4f5bb68d0187172dfd9265f2791979eea5cc3cde0e7f4e43af083311a1d49d864e9d7e59a01b619f547d4621efdb9b0b8aca2131e402

Download Submit
memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1936-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1936-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/1936-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1936-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2680-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2680-18-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2680-19-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2680-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download