b93cf3625e9e64f7cc9832687728da6af4e2e70b9f3fcaece9f51d0d9f498852

Analysis

max time kernel
144s
max time network
152s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
26/04/2024, 12:33

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General

Target

2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe
Size

63KB
MD5

d3f52cead965409f08000e8b36455087
SHA1

ace4aa4b0e8e121dac271e8e5359fa4134caa1d8
SHA256

b93cf3625e9e64f7cc9832687728da6af4e2e70b9f3fcaece9f51d0d9f498852
SHA512

7a0c8746d49a521e12224c40394139309ae068b1a0fba675c82150fb9b65631a4ebcb811c5ee5c27c15869ab08dc47ed341a1be306b4e9aed0b2080817ee84b1
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293X:aq7tdgI2MyzNORQtOflIwoHNV2XBFV71

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000013113-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000013113-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2096	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2852	2024-04-26_d3f52cead965409f08000e8b36455087_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
2852	2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe
2096	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2852 wrote to memory of 2096	2852	2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe	28
PID 2852 wrote to memory of 2096	2852	2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe	28
PID 2852 wrote to memory of 2096	2852	2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe	28
PID 2852 wrote to memory of 2096	2852	2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-26_d3f52cead965409f08000e8b36455087_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2852
- 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:2096

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
63KB

MD5
603741fb4084c7c2b1a997091ed3ee3b

SHA1
27a3c05d0e97f51c39748470f0ae981d324caf61

SHA256
b8672567aaf1865c26ec2c2064dc8faecb20497be0862c2a32a4ecbef6942444

SHA512
11510eb8299ad107609f5c9f3fdda67af4c999df18b6e5135395effa32dcb9ef3ac959529b03b61e5cdf8e838b454c92cddfc8780e09f50d54430b108cf61439

Download Submit
memory/2096-23-0x00000000001C0000-0x00000000001C6000-memory.dmp

Filesize
24KB

Download
memory/2852-0-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2852-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2852-8-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download