a70a08052188cdd7a10214739928ce63e7ee4d5f145431cacf11b404d9c490e5

Analysis

max time kernel
142s
max time network
146s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
05/03/2024, 06:00

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General

Target

2024-03-05_bf779569099f8f3c662de8119dc2e1b1_cryptolocker.exe
Size

36KB
MD5

bf779569099f8f3c662de8119dc2e1b1
SHA1

b3f4e590ba46a4fd11cc56ff9b3744127ae6557f
SHA256

a70a08052188cdd7a10214739928ce63e7ee4d5f145431cacf11b404d9c490e5
SHA512

85a1a1777a53e1223b8bb2ae3ece725d1be770b78dee064fd33e616de06eb8ba3b17b46fd00761e1c7f52092db7d983d1c4752609c40314979eebda0b832a47c
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wmkpfh:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XV

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001313f-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001313f-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3048	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2740	2024-03-05_bf779569099f8f3c662de8119dc2e1b1_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
2740	2024-03-05_bf779569099f8f3c662de8119dc2e1b1_cryptolocker.exe
3048	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2740 wrote to memory of 3048	2740	2024-03-05_bf779569099f8f3c662de8119dc2e1b1_cryptolocker.exe	28
PID 2740 wrote to memory of 3048	2740	2024-03-05_bf779569099f8f3c662de8119dc2e1b1_cryptolocker.exe	28
PID 2740 wrote to memory of 3048	2740	2024-03-05_bf779569099f8f3c662de8119dc2e1b1_cryptolocker.exe	28
PID 2740 wrote to memory of 3048	2740	2024-03-05_bf779569099f8f3c662de8119dc2e1b1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-05_bf779569099f8f3c662de8119dc2e1b1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-05_bf779569099f8f3c662de8119dc2e1b1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2740
- 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:3048

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
36KB

MD5
1658918788f5a4b4e3e2269ce44ac20f

SHA1
d03fc576637e3b70cd860623c4eb02f958c19127

SHA256
6347137ab3e6def2139e4a848ac5ac5e1479c0bd54f2b9e7ef5af9812c01c214

SHA512
b7373ad2117057291a09624554ea5a9217d026ac314353ececa6f61ab292ccd354022a2141e3577e7e8bdecad55acac3e26bf58d3f14773c36d03a4a331277cd

Download Submit
memory/2740-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2740-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2740-8-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/3048-23-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download