911667f5c46b12dcc5044d426753c205d7502e2c6fa56009dd672cd818f76e58

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/03/2024, 14:22

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General

Target

2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe
Size

55KB
MD5

01e8eda21cf9e0f1bc5d53ab9f2c6452
SHA1

acee30a122bbeab8acb15ca4b8b939ce85d3eecc
SHA256

911667f5c46b12dcc5044d426753c205d7502e2c6fa56009dd672cd818f76e58
SHA512

c7bb3164a5faaa443b479e63091926d24fce656ee22c8c0c4836200f9854cde138a08309b139119ad6b70cbf371d92e411dde7d755f844b9b6ec6c59e463b504
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/iVTab3GRuv3VylSV/CdvuU:79mqyNhQMOtEvwDpjBPY7xv3g8euU

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2944-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012331-11.dat	CryptoLocker_rule2
behavioral1/memory/2944-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2820-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2944-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012331-11.dat	CryptoLocker_set1
behavioral1/memory/2944-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2820-17-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2820	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2944	2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_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 2944 wrote to memory of 2820	2944	2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe	28
PID 2944 wrote to memory of 2820	2944	2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe	28
PID 2944 wrote to memory of 2820	2944	2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe	28
PID 2944 wrote to memory of 2820	2944	2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_01e8eda21cf9e0f1bc5d53ab9f2c6452_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2944
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2820

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
55KB

MD5
dc98d3284f404f6b066c9d263e43b211

SHA1
a73dd803950bc2775719079a016ee816e5c8c229

SHA256
a046afd3bb8d2495b2eb8fb016a76ce53e924456c7e020a146782cac83583002

SHA512
06c2ab3555c63d80d9d31c3d050a105317e8e4298c63174e5989f182bdb912d707be1607f21ddf67bf91a8e0ff2e36cfc9acd2c46b2b403d139c956221b3c142

Download Submit
memory/2820-17-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2820-18-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2820-20-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2944-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2944-1-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2944-2-0x0000000000340000-0x0000000000346000-memory.dmp

Filesize
24KB

Download
memory/2944-9-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2944-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download