3e0c47116373cfab04558f602b53701da88dfc42567007687146950d04d60997

Analysis

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

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
01/05/2024, 10:22

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General

Target

2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe
Size

37KB
MD5

03fbce37e4e6808ca57e054bd6daa17e
SHA1

7e9553c629f707f4f2478fd2694adbde3f206c93
SHA256

3e0c47116373cfab04558f602b53701da88dfc42567007687146950d04d60997
SHA512

c5216a2c7ea274f1f64fbea017842c5bf7529f6869ef5440ed511b604684a23068792a0551502b72b9c9fdce3c194145a7d0e95db10ff1ed1c3111798203ed27
SSDEEP

768:b7o/2n1TCraU6GD1a4Xt9bRU6zA6o36mJ:bc/y2lLRU6zA6qJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d00000001231a-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1712	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
2188	2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_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
2188	2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe
1712	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2188 wrote to memory of 1712	2188	2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe	28
PID 2188 wrote to memory of 1712	2188	2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe	28
PID 2188 wrote to memory of 1712	2188	2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe	28
PID 2188 wrote to memory of 1712	2188	2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-01_03fbce37e4e6808ca57e054bd6daa17e_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2188
- 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:1712

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\rewok.exe

Filesize
37KB

MD5
384bebec2a2041742f0365daa2168e8d

SHA1
88d7de0ad70084db3b77a89785b1e0f8091c644f

SHA256
141a41dd50216c666a007af8403ec2d63a946e8ca0043cfeed0f383f7daa99c9

SHA512
6ea9ed03bb335dc657045c5a07d2eb041bd47372d5d7f5b868a19afe675993ee9a888af0c73b9b8583f187d251098bea98f87108f81891813cdbb8dd9b25aff0

Download Submit
memory/1712-23-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2188-0-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download
memory/2188-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2188-8-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download