7ff492cdfec5f0f9d945e5da32cc1a670b3d8ffcc19c8ab0c20c5e426b0911f0

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
26/01/2024, 19:31

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General

Target

2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe
Size

79KB
MD5

6b6c9134af429a39a209cea1135cbd5d
SHA1

7c7299a622d898e7cf760a7a1e6d65c34796b32a
SHA256

7ff492cdfec5f0f9d945e5da32cc1a670b3d8ffcc19c8ab0c20c5e426b0911f0
SHA512

b184b9fceb52b32f7046f5adb58cfc6cece56eae2041497310813d02b69feb0a0dd72343bef25a629bd58ffa99723cc68706dd95a198b4c92f7865e8ea34d11b
SSDEEP

1536:T6QFElP6n+gxmddpMOtEvwDpjwaxTNUOAkXtBdC:T6a+rdOOtEvwDpjNtA

Score

9^/10

upx

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2964-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c0000000122c4-11.dat	CryptoLocker_rule2
behavioral1/memory/2964-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3020-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2964-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c0000000122c4-11.dat	CryptoLocker_set1
behavioral1/memory/2964-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3020-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/2964-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000c0000000122c4-11.dat	UPX
behavioral1/memory/2964-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3020-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3020	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2964	2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe

UPX packed file 5 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2964-0-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/files/0x000c0000000122c4-11.dat	upx
behavioral1/memory/2964-15-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp	upx
behavioral1/memory/3020-26-0x0000000000500000-0x0000000000510000-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 2964 wrote to memory of 3020	2964	2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe	28
PID 2964 wrote to memory of 3020	2964	2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe	28
PID 2964 wrote to memory of 3020	2964	2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe	28
PID 2964 wrote to memory of 3020	2964	2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_6b6c9134af429a39a209cea1135cbd5d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2964
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3020

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

Replay Monitor

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Downloads

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

Filesize
79KB

MD5
0f09231d0868a1102443e91fe3e8e86f

SHA1
53989f906415e00fc615ebe2a94085727f32f103

SHA256
c431e9b0c75fc6781d406397def32ee703f685562c725b94f315dfb90823dbd3

SHA512
da36a0aca0685041948d5e9085c290cd0270e537452b83166d6c0207cdd1055c12bbb131206ee236fe41e14caeb61cbbdfa625b62f1d3d57480587ceff4fe997

Download Submit
memory/2964-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2964-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2964-3-0x0000000000480000-0x0000000000486000-memory.dmp

Filesize
24KB

Download
memory/2964-2-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2964-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3020-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3020-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/3020-21-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/3020-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download