b275ed08aeeacf40f29d082143a5e8c9bbe7a895aba347c95a8f080635dd9702

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
02/02/2024, 05:39

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General

Target

2024-02-02_eaaf1bb13b2539f91af75253a2920ed4_cryptolocker.exe
Size

48KB
MD5

eaaf1bb13b2539f91af75253a2920ed4
SHA1

1502101012ce947edfabe05549038e70865d0f7b
SHA256

b275ed08aeeacf40f29d082143a5e8c9bbe7a895aba347c95a8f080635dd9702
SHA512

739eacb06dc24276f98ebacf5404e019a4e63030c67b205e4bc39260de5a8c0040c9be5e1e8c12c5ee0ddc3aca4b104034c8d02cb7e52f1068b6ce0a141c5816
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIx:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7G

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012253-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012253-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1144	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2528	2024-02-02_eaaf1bb13b2539f91af75253a2920ed4_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
2528	2024-02-02_eaaf1bb13b2539f91af75253a2920ed4_cryptolocker.exe
1144	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2528 wrote to memory of 1144	2528	2024-02-02_eaaf1bb13b2539f91af75253a2920ed4_cryptolocker.exe	28
PID 2528 wrote to memory of 1144	2528	2024-02-02_eaaf1bb13b2539f91af75253a2920ed4_cryptolocker.exe	28
PID 2528 wrote to memory of 1144	2528	2024-02-02_eaaf1bb13b2539f91af75253a2920ed4_cryptolocker.exe	28
PID 2528 wrote to memory of 1144	2528	2024-02-02_eaaf1bb13b2539f91af75253a2920ed4_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-02_eaaf1bb13b2539f91af75253a2920ed4_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-02_eaaf1bb13b2539f91af75253a2920ed4_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2528
- 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:1144

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
29253cec78f1f22f85fa62cdbf13b4e1

SHA1
4e3afdeb38a5ef0a8f61c0e70f0a568e20efcab3

SHA256
5c276dedbe409fcf06d1f1bab3a78bfc3b4c1bed43f46215325c6652dcec523a

SHA512
7a48c9a07c8cb107a0fa66b9e84f058ddbaa3800f482a14a8e72dda4f14290d2b28b4726855cd5bb8d310a328cf30f18d10eed88d21c66c1218a43b8145d1279

Download Submit
memory/1144-20-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2528-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2528-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2528-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download