bff101067278aa9b061578ed55166ac550a48398a6799e663342f1866001b5ab

Analysis

max time kernel
148s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
29/02/2024, 05:04

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General

Target

2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe
Size

103KB
MD5

7e3800716ea57831b5b3104b6bd9a95e
SHA1

d25a5dbf5caf2eb33575defdf1abbbcb10247b86
SHA256

bff101067278aa9b061578ed55166ac550a48398a6799e663342f1866001b5ab
SHA512

4a99d6f2f1507c8871630a7ff5ba818d1637cad5e0dea06e0d31b5cb5032f5356d96b3856a7b34652b17330a56ebedd660387ff6b88ba6a81bf01f299c7bed33
SSDEEP

1536:V6QFElP6n+gMQMOtEvwDpjQGYQbN/PKwNgpwqWsvikFI:V6a+pOtEvwDpjtzb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001222c-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000900000001222c-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2300	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1136	2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_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 1136 wrote to memory of 2300	1136	2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe	28
PID 1136 wrote to memory of 2300	1136	2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe	28
PID 1136 wrote to memory of 2300	1136	2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe	28
PID 1136 wrote to memory of 2300	1136	2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-29_7e3800716ea57831b5b3104b6bd9a95e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1136
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2300

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
103KB

MD5
186697d5749bcc0e239e03bbd6b56914

SHA1
7cc21d46c2a04292a41b05e3c3393daf1d2dedf5

SHA256
c140cc5fe588e1be34ce798af44d07dca67410093529d3e1c0a3e01bb4041211

SHA512
c1292d337f95b54d67d28be58a4b94d37740fbda113f6ec69a72d319e31d7cd06c9f58edcc51ede9b86a63dda82ab647a0fe02466f07497aff663220bfd0cf25

Download Submit
memory/1136-0-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1136-2-0x0000000000440000-0x0000000000446000-memory.dmp

Filesize
24KB

Download
memory/1136-1-0x0000000000470000-0x0000000000476000-memory.dmp

Filesize
24KB

Download
memory/2300-15-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2300-19-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download