f11fa58725698689c9507c7166608289fd52e2ec93c4eecb6d55b96f0fb51e49

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
27-03-2024 01:46

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General

Target

2024-03-27_db090e168ef64e7dd347718a8353a7a0_cryptolocker.exe
Size

35KB
MD5

db090e168ef64e7dd347718a8353a7a0
SHA1

87414c59308639ea64d734fdf40d4df261eace51
SHA256

f11fa58725698689c9507c7166608289fd52e2ec93c4eecb6d55b96f0fb51e49
SHA512

3c678935213ebeccd403479958d083a25be15dd38ca9fe85c0cf2c2754ca8d4ba2716dad511cee849a9b27ff2fe34b8ec6642a56f63abbeef3abc67cfcafbdb9
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXunRR:btB9g/WItCSsAGjX7e9N0hunRR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x00090000000122be-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1796	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
2396	2024-03-27_db090e168ef64e7dd347718a8353a7a0_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
2396	2024-03-27_db090e168ef64e7dd347718a8353a7a0_cryptolocker.exe
1796	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 1796	2396	2024-03-27_db090e168ef64e7dd347718a8353a7a0_cryptolocker.exe	28
PID 2396 wrote to memory of 1796	2396	2024-03-27_db090e168ef64e7dd347718a8353a7a0_cryptolocker.exe	28
PID 2396 wrote to memory of 1796	2396	2024-03-27_db090e168ef64e7dd347718a8353a7a0_cryptolocker.exe	28
PID 2396 wrote to memory of 1796	2396	2024-03-27_db090e168ef64e7dd347718a8353a7a0_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-27_db090e168ef64e7dd347718a8353a7a0_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-27_db090e168ef64e7dd347718a8353a7a0_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2396
- 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:1796

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
36KB

MD5
ae8ab59cf72f4f8c9fe48211ac8fb244

SHA1
f6a59a1f5148bf1863cf9bd444e5fec49dd188a4

SHA256
3eb0ef32fd29c1d66379b40a1234d58b41bcc739535eaaee2440aa1ff1cc8377

SHA512
d5448578f9d40c22c027d7ca5201854083a3fcc15d2bf3d07fedc6257b9adbbd6991f81430c7cce2b46cdab17a275f8333f7694c49660af3c6416e9dde4f2a94

Download Submit
memory/1796-23-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/2396-0-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2396-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2396-8-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download