6b6a8bce86d1c34390e5152af255d7fe1d16409e01219b771b49409f6f6a1c58

Analysis

max time kernel
146s
max time network
151s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
26/03/2024, 11:47

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General

Target

2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe
Size

44KB
MD5

899f499ed6a854b2fbe3e7d5cdc5dd14
SHA1

4bf5a09d193338ec561036eae3bb4fe6b0810d76
SHA256

6b6a8bce86d1c34390e5152af255d7fe1d16409e01219b771b49409f6f6a1c58
SHA512

cc73a6b5584ecbb74a1e91f20eaeae745203fe0dd0f81c35838fd7acc23a8fafcefd1b9f04ee86928959e086c3700c0f9d928e7991d58e174504c9499b601308
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxO:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224c-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224c-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2256	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2872	2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_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
2872	2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe
2256	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2872 wrote to memory of 2256	2872	2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe	28
PID 2872 wrote to memory of 2256	2872	2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe	28
PID 2872 wrote to memory of 2256	2872	2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe	28
PID 2872 wrote to memory of 2256	2872	2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-26_899f499ed6a854b2fbe3e7d5cdc5dd14_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2872
- 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:2256

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
44KB

MD5
3e0aaee2e8d3b2276ef0b0f4d91ede28

SHA1
791abb62c2573a14138e8ffa624473c90b53040c

SHA256
b22445224f764baa616f0e62ee1885f4bfce715780185dff6bfb5bfad38725b4

SHA512
c4bf0f6ab5d8e4a9fa69f3e1c3a5f05b85fc63e44be2adf9090b3216edd984e329560143a26cc0c7620f6a80a354e303bd75994b077c6ffb5d0cf24ca14075ae

Download Submit
memory/2256-17-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2872-0-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2872-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2872-8-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download