05acecee03c5da86c872ff349dae69cece7946819259f5289d0dce982ce6e6bf

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
03/05/2024, 17:33

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General

Target

2024-05-03_8e55bdebefcf044c63a394bed3d02b2a_cryptolocker.exe
Size

51KB
MD5

8e55bdebefcf044c63a394bed3d02b2a
SHA1

1b9d3f40f581aa037ce1e5e99eae10804ec79203
SHA256

05acecee03c5da86c872ff349dae69cece7946819259f5289d0dce982ce6e6bf
SHA512

ec6257c10e389e4e4cff2532694df83fbb78cfb4daa4562c421b529a39a98412466bc794532985ddb358627a7f28aaead621c1a4ad4d779305cd8bbc9664c1f4
SSDEEP

768:79inqyNR/QtOOtEvwDpjBK/rJ+Nw8qnTHGfHz:79mqyNhQMOtEvwDpjBxe8GGfT

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2900-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00090000000149f5-11.dat	CryptoLocker_rule2
behavioral1/memory/2900-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3024-24-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2900-0-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00090000000149f5-11.dat	CryptoLocker_set1
behavioral1/memory/2900-15-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3024-24-0x0000000000500000-0x000000000050F000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3024	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2900	2024-05-03_8e55bdebefcf044c63a394bed3d02b2a_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 2900 wrote to memory of 3024	2900	2024-05-03_8e55bdebefcf044c63a394bed3d02b2a_cryptolocker.exe	28
PID 2900 wrote to memory of 3024	2900	2024-05-03_8e55bdebefcf044c63a394bed3d02b2a_cryptolocker.exe	28
PID 2900 wrote to memory of 3024	2900	2024-05-03_8e55bdebefcf044c63a394bed3d02b2a_cryptolocker.exe	28
PID 2900 wrote to memory of 3024	2900	2024-05-03_8e55bdebefcf044c63a394bed3d02b2a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-03_8e55bdebefcf044c63a394bed3d02b2a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-03_8e55bdebefcf044c63a394bed3d02b2a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2900
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3024

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
51KB

MD5
a2335228a8bc713a3cd0d95a769f780c

SHA1
817554abbe947aaa08121c890cb067208b4abd4c

SHA256
de4d8d84caa01e6beaf2e55f6aae0aea6577f90f047f91ddca28f68962609f0f

SHA512
52079765e1b3eaea179f2e4aeef9fcbcd04c79df1946240b612e8ec154751416d89d2d76de644899cba4ba41ce55cda4e6e34684eb0734f35dae0260a8e2dc8a

Download Submit
memory/2900-0-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/2900-1-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2900-2-0x0000000000250000-0x0000000000256000-memory.dmp

Filesize
24KB

Download
memory/2900-3-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2900-15-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3024-24-0x0000000000500000-0x000000000050F000-memory.dmp

Filesize
60KB

Download
memory/3024-17-0x00000000004E0000-0x00000000004E6000-memory.dmp

Filesize
24KB

Download