e8708fdd2bfc4d75b3ce0739876709a127dd2402ee29ed30728be14808f41c6a

Analysis

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

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
18-02-2024 16:39

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General

Target

2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe
Size

44KB
MD5

6891c507c6fee69ba24013da74ca3e8a
SHA1

1c54aa2c4b086d74485040e5ff5e98f22b61bb82
SHA256

e8708fdd2bfc4d75b3ce0739876709a127dd2402ee29ed30728be14808f41c6a
SHA512

77077b758595826b0ffec5364cb773f38d5670aa87e9d96aed41997c2faf07b9c2d7ffbd2d4892db48bfc8e603cf9a232505392590eb496320b1cce00df939cf
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphedq:bc/y2lkF0+BeJ

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000e000000012670-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2220	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1644	2024-02-18_6891c507c6fee69ba24013da74ca3e8a_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
1644	2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe
2220	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1644 wrote to memory of 2220	1644	2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe	28
PID 1644 wrote to memory of 2220	1644	2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe	28
PID 1644 wrote to memory of 2220	1644	2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe	28
PID 1644 wrote to memory of 2220	1644	2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_6891c507c6fee69ba24013da74ca3e8a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1644
- 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:2220

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
44KB

MD5
3d8bfec5a8cf6794b28f002231077193

SHA1
972c2ad3434771259db2747e15a10b945274a274

SHA256
99cfde9b18069e7915d2c71ee500fd236c31fff979cede1a7086fb6d00ed5961

SHA512
0fd2883a23f829523329a9d7df087190e60d72080bd42f3716d0ade4be0cb422da56f65f7b1eaa226e822ada0d3d277ad36d8b4713e02146731c0c0384d583c9

Download Submit
memory/1644-0-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/1644-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1644-1-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2220-18-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download