830eb2cf0324cc27da428a82fb4a97dc1a919e1486995a66d61db7e359f23ca0

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
18/02/2024, 06:33

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General

Target

2024-02-18_4514b240a2b56dc9f4be056d968bb3b5_cryptolocker.exe
Size

47KB
MD5

4514b240a2b56dc9f4be056d968bb3b5
SHA1

66c70b813b214d26597b13078de6951f770aecae
SHA256

830eb2cf0324cc27da428a82fb4a97dc1a919e1486995a66d61db7e359f23ca0
SHA512

c4be838b122d13896d0a45af637ffef5c0534db8da809b654d965e478114975fe263c5a3903c28157b2c8ca7f8b4d7497b9f3b00642d44d7be26e2c2e1944a55
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGpebVIYLHA3KxV:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xk

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000122fa-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c0000000122fa-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2928	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2876	2024-02-18_4514b240a2b56dc9f4be056d968bb3b5_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
2876	2024-02-18_4514b240a2b56dc9f4be056d968bb3b5_cryptolocker.exe
2928	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2876 wrote to memory of 2928	2876	2024-02-18_4514b240a2b56dc9f4be056d968bb3b5_cryptolocker.exe	28
PID 2876 wrote to memory of 2928	2876	2024-02-18_4514b240a2b56dc9f4be056d968bb3b5_cryptolocker.exe	28
PID 2876 wrote to memory of 2928	2876	2024-02-18_4514b240a2b56dc9f4be056d968bb3b5_cryptolocker.exe	28
PID 2876 wrote to memory of 2928	2876	2024-02-18_4514b240a2b56dc9f4be056d968bb3b5_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-18_4514b240a2b56dc9f4be056d968bb3b5_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-18_4514b240a2b56dc9f4be056d968bb3b5_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2876
- 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:2928

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
48KB

MD5
27ac739263b8589d2b0b6452259de223

SHA1
9315379e9495aa39ddd3b03bdde3809c0ac5a24d

SHA256
ac7cbf2f010fc575a512c811f8b3ce77c6f7ea754da79d312fc4afccffcda74e

SHA512
5bd529347b965d0290e43e768c7e68a9ecb2a397c7495e627bed71b6e0c0660ec5c7d3aadd18411dff46df7ef681342753250bf41eae880e3731439d1625d882

Download Submit
memory/2876-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2876-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2876-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2928-16-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download