9399fec7fdb9ee791a565e2e0fabe3f3a891e12214fbc3d48f43f29d94b87561

Analysis

max time kernel
149s
max time network
154s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
29-01-2024 05:29

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

2024-01-29_34eb7375095c79daf2af90bea273399f_cryptolocker.exe
Size

41KB
MD5

34eb7375095c79daf2af90bea273399f
SHA1

d6697099161dd2444c23d65c027f826a51d138c0
SHA256

9399fec7fdb9ee791a565e2e0fabe3f3a891e12214fbc3d48f43f29d94b87561
SHA512

6a631ed3b3ff6c4f16592fff2da97cc28fe7e772793ed1b95a8839bbe272d74415524ba8c5b5dece2a71c7f2e623aa99999993b0aa1cc7ce908a9d8211e3fdb6
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMRqmz59k:bc/y2lkF0+Bjq9k

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001224a-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2084	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1732	2024-01-29_34eb7375095c79daf2af90bea273399f_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of UnmapMainImage 2 IoCs

pid	Process
1732	2024-01-29_34eb7375095c79daf2af90bea273399f_cryptolocker.exe
2084	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1732 wrote to memory of 2084	1732	2024-01-29_34eb7375095c79daf2af90bea273399f_cryptolocker.exe	28
PID 1732 wrote to memory of 2084	1732	2024-01-29_34eb7375095c79daf2af90bea273399f_cryptolocker.exe	28
PID 1732 wrote to memory of 2084	1732	2024-01-29_34eb7375095c79daf2af90bea273399f_cryptolocker.exe	28
PID 1732 wrote to memory of 2084	1732	2024-01-29_34eb7375095c79daf2af90bea273399f_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-29_34eb7375095c79daf2af90bea273399f_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-29_34eb7375095c79daf2af90bea273399f_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1732
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2084

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

Loading Replay Monitor...

Downloads

\Users\Admin\AppData\Local\Temp\rewok.exe

Filesize
42KB

MD5
9d006023632b6c6ee0890e637509afe9

SHA1
8f34a3d5afaeff67fb36eba535b1bc8bb3ef9a45

SHA256
fdc0941b7b754c5a5238951320ba80a9a3c02407622a623dbdd02f1fafc30609

SHA512
4f215f305cf20422e178374777e67f7dfd7f233609736c0d2f2b90ce95fd80f57cfbadbe2559aabc5d400f6267c29ba783ee0a93d1c0ce9d987be2e3d4bf9b3b

Download Submit
memory/1732-0-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/1732-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1732-2-0x0000000000260000-0x0000000000266000-memory.dmp

Filesize
24KB

Download
memory/2084-18-0x0000000000320000-0x0000000000326000-memory.dmp

Filesize
24KB

Download