1f45a1c8a43efbeb1db2918ecab2cb26a67ae010092a9bb2190617cb54e1d10d

Analysis

max time kernel
132s
max time network
140s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
25/02/2024, 17:38

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General

Target

2024-02-25_803d6bf89f95e361c64b2cea95095b4a_cryptolocker.exe
Size

42KB
MD5

803d6bf89f95e361c64b2cea95095b4a
SHA1

8e6b16b9ea67b61267c87e9134219a2d139dcbc7
SHA256

1f45a1c8a43efbeb1db2918ecab2cb26a67ae010092a9bb2190617cb54e1d10d
SHA512

75a509ccddaed94d789a0db336768328119094f77bafddbfcbc37aaefd02cdf7d91fe1dd63430719383e57cc3bc915c161eba863bbacb9fba0ff344a83fb2164
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphej/W:bc/y2lkF0+Ber

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012256-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1284	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
1736	2024-02-25_803d6bf89f95e361c64b2cea95095b4a_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	2024-02-25_803d6bf89f95e361c64b2cea95095b4a_cryptolocker.exe
1284	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1736 wrote to memory of 1284	1736	2024-02-25_803d6bf89f95e361c64b2cea95095b4a_cryptolocker.exe	28
PID 1736 wrote to memory of 1284	1736	2024-02-25_803d6bf89f95e361c64b2cea95095b4a_cryptolocker.exe	28
PID 1736 wrote to memory of 1284	1736	2024-02-25_803d6bf89f95e361c64b2cea95095b4a_cryptolocker.exe	28
PID 1736 wrote to memory of 1284	1736	2024-02-25_803d6bf89f95e361c64b2cea95095b4a_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-25_803d6bf89f95e361c64b2cea95095b4a_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-25_803d6bf89f95e361c64b2cea95095b4a_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1736
- 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:1284

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
42KB

MD5
9cfc3c45827539cd679f1fed306ee058

SHA1
efacc96afe28933587c93ccda6dc5949b176ebe3

SHA256
165ce80dfc42e081b038d24475af85bc0527409ec87979e1d5b6d5ffa8dabc53

SHA512
51923e91b42e04bcfbf1b9433d965b15c46c40003e876b151e3f0b769cfe7e660b6e6df168fed5f7a39de29f1975720db48c8d4becf69a22616eedbd05f77c09

Download Submit
memory/1284-17-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1736-0-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/1736-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/1736-1-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download