3a4f2d6ffcb992cad08ce6176d1e71b2ad608cbefcb4931862ae1fd94dc028d5

Analysis

max time kernel
133s
max time network
145s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
21/04/2024, 04:53

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General

Target

2024-04-21_a12921d308299ee90fc96a9420757e0a_cryptolocker.exe
Size

69KB
MD5

a12921d308299ee90fc96a9420757e0a
SHA1

0f25743e2e6e9bae3fb92acbfa34534e03ecf9dc
SHA256

3a4f2d6ffcb992cad08ce6176d1e71b2ad608cbefcb4931862ae1fd94dc028d5
SHA512

ad87aa41bc20fef69fd902cad67fb97bef2b46c5159f40ad9343a83b245da490008e0306ec5b086700dc2037021f4b27a30466d9e9097e349df27dbed4039ce6
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKU50g:DW60sllyWOtEvwDpjwF85b

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2744-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000012247-11.dat	CryptoLocker_rule2
behavioral1/memory/2944-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2744-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2744-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x0009000000012247-11.dat	CryptoLocker_set1
behavioral1/memory/2944-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2744-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2944	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2744	2024-04-21_a12921d308299ee90fc96a9420757e0a_cryptolocker.exe

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 2744 wrote to memory of 2944	2744	2024-04-21_a12921d308299ee90fc96a9420757e0a_cryptolocker.exe	28
PID 2744 wrote to memory of 2944	2744	2024-04-21_a12921d308299ee90fc96a9420757e0a_cryptolocker.exe	28
PID 2744 wrote to memory of 2944	2744	2024-04-21_a12921d308299ee90fc96a9420757e0a_cryptolocker.exe	28
PID 2744 wrote to memory of 2944	2744	2024-04-21_a12921d308299ee90fc96a9420757e0a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-21_a12921d308299ee90fc96a9420757e0a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-21_a12921d308299ee90fc96a9420757e0a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2744
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2944

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
69KB

MD5
4d6623f901fb3c6e79576d766a9c0ac3

SHA1
b418ef498de3c9dbbd448d6566d874dfcce3462d

SHA256
8c63ddbed7fc698e412d6804cc9a33963c2a7d976c0380a12f72ee14f5d61eff

SHA512
8f825beac05690499cd2805a6531f78923f72f6211e031f128b73c1fbabc2825ec0c57eab5e645434ab864234314f5b9e326680f30de329b5d2d2c1ace8f7592

Download Submit
memory/2744-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2744-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2744-2-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2744-3-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2744-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2944-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2944-18-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/2944-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download