9cf3a7438949b73f2064cb7fce9192fdd49bde2d3236ddbddce4d7c0df7cd9f5

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20240221-en
resource tags

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

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General

Target

2024-04-05_c3a8d57a9e54d4cc1d679e4279468820_cryptolocker.exe
Size

58KB
MD5

c3a8d57a9e54d4cc1d679e4279468820
SHA1

feb4af83e491f8311a25e5cb5c908f1f3541eebb
SHA256

9cf3a7438949b73f2064cb7fce9192fdd49bde2d3236ddbddce4d7c0df7cd9f5
SHA512

e05be828e218d4ec51acacfaa2dd1319ecfc5647fe7d8ae438f98b6a9a4f3a07e7cc4b1ee876e89092cc3e2a19795fe16562c149d37e092387292a27dfef6181
SSDEEP

1536:btB9g/xtCSKfxLIc//Xr+/AO/kIZ3ft2nVuTKB6nggOlHdUH6/:btng54SMLr+/AO/kIhfoKMHdJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001227d-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
3052	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
844	2024-04-05_c3a8d57a9e54d4cc1d679e4279468820_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
844	2024-04-05_c3a8d57a9e54d4cc1d679e4279468820_cryptolocker.exe
3052	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 844 wrote to memory of 3052	844	2024-04-05_c3a8d57a9e54d4cc1d679e4279468820_cryptolocker.exe	28
PID 844 wrote to memory of 3052	844	2024-04-05_c3a8d57a9e54d4cc1d679e4279468820_cryptolocker.exe	28
PID 844 wrote to memory of 3052	844	2024-04-05_c3a8d57a9e54d4cc1d679e4279468820_cryptolocker.exe	28
PID 844 wrote to memory of 3052	844	2024-04-05_c3a8d57a9e54d4cc1d679e4279468820_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-05_c3a8d57a9e54d4cc1d679e4279468820_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-05_c3a8d57a9e54d4cc1d679e4279468820_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:844
- C:\Users\Admin\AppData\Local\Temp\gewos.exe
  "C:\Users\Admin\AppData\Local\Temp\gewos.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:3052

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\gewos.exe

Filesize
58KB

MD5
42b4142f7b152b25c87bb4c4eef42b8c

SHA1
a0b3f8dd76abc9feceb6cafeb81e7b8e5e066199

SHA256
13692bbea2d9034453d37db1f687f8b4d3da8076876e6a36437f29216235ae46

SHA512
1fbb518294527b95564d06a9df27b34b8aec8353d26724633a37f9d4248e8039cce7645922455e0ee72177032e4689239d5e24e57380f13f4e58a2480436fe51

Download Submit
memory/844-0-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/844-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/844-3-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/3052-18-0x00000000001F0000-0x00000000001F6000-memory.dmp

Filesize
24KB

Download