fca4deedde664c1283d066c1b9b827355cd50043326f8d14237a400290554b4c

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
02/02/2024, 07:39

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General

Target

2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe
Size

61KB
MD5

b78763c219d2efdf85c3a74a1a427752
SHA1

bd20c7de0ab79790a692d3757f238b70b6babc97
SHA256

fca4deedde664c1283d066c1b9b827355cd50043326f8d14237a400290554b4c
SHA512

4eee87ad9de1e36086f59b4210ff781772a083f6eefe64556cf78208e1225351f498a8465d496988db147fb354a1d59e18f55f5767b9b268adad327124a19b57
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSy:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7/

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012270-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x0008000000012270-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2448	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
1704	2024-02-02_b78763c219d2efdf85c3a74a1a427752_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
1704	2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe
2448	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1704 wrote to memory of 2448	1704	2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe	28
PID 1704 wrote to memory of 2448	1704	2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe	28
PID 1704 wrote to memory of 2448	1704	2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe	28
PID 1704 wrote to memory of 2448	1704	2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-02_b78763c219d2efdf85c3a74a1a427752_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1704
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2448

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\hurok.exe

Filesize
62KB

MD5
7e9683afc925ac058ddd6cabe2566a82

SHA1
a5ed1a0f9145a56d4251feda11a25bb4133d525c

SHA256
4b15705aa4703ef5f5afb0350ae13d03db4ad1c4edf428aed3dd0af0ed698128

SHA512
5877318a3194e73b0eaf5dc35a01214e1dbec83befc66a01fe1574c164ac8c101f84ef304da932c1ee1b82d4c2b1034ff2ce648a42919c678413a141e0844c7d

Download Submit
memory/1704-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1704-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/1704-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2448-18-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download