6281f901e8d972498c2080cd8e7126e686191a3878c500b88f4331d26b5deccf

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
20/05/2024, 00:47

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General

Target

2024-05-20_a8bdfb0b2780b745709386065505df15_cryptolocker.exe
Size

38KB
MD5

a8bdfb0b2780b745709386065505df15
SHA1

cc85bdcd5378d6621b516dbfa5654ddabc55e6a4
SHA256

6281f901e8d972498c2080cd8e7126e686191a3878c500b88f4331d26b5deccf
SHA512

386748ec00de153a63d13d63d8df038b5e2fc37049592acfa8798f535871c6aa4aded3546a3dc88da50abf72b0bc40fad45e231f00a029eb4a3b3462809c0bce
SSDEEP

768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0WZyT:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XN

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012280-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012280-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2604	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2208	2024-05-20_a8bdfb0b2780b745709386065505df15_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
2208	2024-05-20_a8bdfb0b2780b745709386065505df15_cryptolocker.exe
2604	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2208 wrote to memory of 2604	2208	2024-05-20_a8bdfb0b2780b745709386065505df15_cryptolocker.exe	28
PID 2208 wrote to memory of 2604	2208	2024-05-20_a8bdfb0b2780b745709386065505df15_cryptolocker.exe	28
PID 2208 wrote to memory of 2604	2208	2024-05-20_a8bdfb0b2780b745709386065505df15_cryptolocker.exe	28
PID 2208 wrote to memory of 2604	2208	2024-05-20_a8bdfb0b2780b745709386065505df15_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-20_a8bdfb0b2780b745709386065505df15_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_a8bdfb0b2780b745709386065505df15_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2208
- 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:2604

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
38KB

MD5
1f8d2b9055fd570da112932b51a528df

SHA1
8dddfd7e33063a77f2169648ac41505dc63ab8a7

SHA256
738d650de761dac8f3d0a3e060a4949c43092689562f9117bd88eb1377ce2e70

SHA512
f23fa5b1d8e23bfe0207d5aaac01521f17a26c07c574c6f55b5f8b010bf4d0810ddecbfa98c7a39072dc28502f020f24bccce0eb228e06246b76f2e8c5645e63

Download Submit
memory/2208-0-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2208-1-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2208-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2604-23-0x0000000000370000-0x0000000000376000-memory.dmp

Filesize
24KB

Download