4c8cda81a65711304d30108cf9b3449cf9ec0499b99eb88cce17f08b5bea2b8f

Analysis

max time kernel
149s
max time network
140s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
27/01/2024, 03:25

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General

Target

2024-01-27_224b4e7d03514a3726f78930757b0b3a_cryptolocker.exe
Size

30KB
MD5

224b4e7d03514a3726f78930757b0b3a
SHA1

751ffdba6b504a715c3e509c5c9aa389e45565fd
SHA256

4c8cda81a65711304d30108cf9b3449cf9ec0499b99eb88cce17f08b5bea2b8f
SHA512

652b0a9b079699c23bb4cc24ed4ebbdbde0906949ad9bb7995988c79f41cf8e60ceaf89c06ac04dc18d692b2266e6bffa068b6af46a21ac363b499cabe02a006
SSDEEP

768:q0ZziOWwULueOSdE8tOOtEvwDpjeWaJIOc+4tH/:q0zizzOSxMOtEvwDpj/arqf

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/1984-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x0009000000012261-11.dat	CryptoLocker_rule2
behavioral1/memory/1984-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/3032-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/1984-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/3032-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 5 IoCs

resource	yara_rule
behavioral1/memory/1984-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x0009000000012261-11.dat	UPX
behavioral1/memory/1984-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/3032-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
3032	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1984	2024-01-27_224b4e7d03514a3726f78930757b0b3a_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 1984 wrote to memory of 3032	1984	2024-01-27_224b4e7d03514a3726f78930757b0b3a_cryptolocker.exe	28
PID 1984 wrote to memory of 3032	1984	2024-01-27_224b4e7d03514a3726f78930757b0b3a_cryptolocker.exe	28
PID 1984 wrote to memory of 3032	1984	2024-01-27_224b4e7d03514a3726f78930757b0b3a_cryptolocker.exe	28
PID 1984 wrote to memory of 3032	1984	2024-01-27_224b4e7d03514a3726f78930757b0b3a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-27_224b4e7d03514a3726f78930757b0b3a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_224b4e7d03514a3726f78930757b0b3a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1984
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:3032

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
30KB

MD5
3c9bbc312e0335451697c5da85e17ee2

SHA1
01d0cc7845b6541027767914700103f9bc2816b5

SHA256
a5ccb810300745872dd06f8c5b6d3bad3e77c74bad62b8c5720d239ff163335b

SHA512
3de069cbb56ec5ddaf880b9a94b6fa9fd5072de6bb9f09ccafb0bd08ef9e08103738f755935f2b5b90f03681fcb834b604fa7399fb23a6acfbcb050d094146df

Download Submit
memory/1984-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1984-1-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1984-2-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1984-9-0x00000000002D0000-0x00000000002D6000-memory.dmp

Filesize
24KB

Download
memory/1984-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3032-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/3032-18-0x0000000000430000-0x0000000000436000-memory.dmp

Filesize
24KB

Download
memory/3032-23-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/3032-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download