e3b0d59b24d7b6d74cf9f1e870e5e4e54d0388b586c6c54bb41fcab8a9bc4e35

Analysis

max time kernel
120s
max time network
124s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
14-02-2024 13:52

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General

Target

2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe
Size

37KB
MD5

a3dd7235c8f82a42c6834142dc443560
SHA1

0479ab0ca810161f8ff914a75ae66e3104bb9092
SHA256

e3b0d59b24d7b6d74cf9f1e870e5e4e54d0388b586c6c54bb41fcab8a9bc4e35
SHA512

33108d25ec4b8b4cb5c25427021b347ef119a96e0654d540e53fc6237dc7f18df250aaf7433a716e1c855acff8aa17f6bb7d19b97226c7d6d2a40685db815aa6
SSDEEP

384:btBYQg/WIEhUCSNyepEjYnDOAlzVol6U/zzo+tkq4XDIwNiJXxXuni8LB0P:btB9g/WItCSsAGjX7e9N0hunLOP

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012257-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2348	gewos.exe

Loads dropped DLL 1 IoCs

pid	Process
1736	2024-02-14_a3dd7235c8f82a42c6834142dc443560_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
1736	2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe
2348	gewos.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 2348	1736	2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe	28
PID 1736 wrote to memory of 2348	1736	2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe	28
PID 1736 wrote to memory of 2348	1736	2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe	28
PID 1736 wrote to memory of 2348	1736	2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-14_a3dd7235c8f82a42c6834142dc443560_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1736
- 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:2348

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
37KB

MD5
c99b23f53a288a1349bda1e697d9155a

SHA1
a87de306c5dba73f3df14fac1875f0c10349151c

SHA256
cffc9acd08dee7700abbbd9a8f17bb540bcd89cc59f1b2802f2e245c36cbacc8

SHA512
bf1697cfe8856abe613da0e2eaf6f97d13b0ad8f86a929d12df25171d993240813464b6de05e5e9c96e776dd449661ea31d917b00756f7ef41ab7fb16ff8ab31

Download Submit
memory/1736-0-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/1736-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1736-2-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download
memory/2348-18-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download