517adcc2f8eedc64982a1ef2bc8796c87a1453654d23ec5f249d7b4aab4dce67

Analysis

max time kernel
149s
max time network
156s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 04:17

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General

Target

2024-02-03_b6847dc974e3793953768d7231f63cde_cryptolocker.exe
Size

36KB
MD5

b6847dc974e3793953768d7231f63cde
SHA1

7b4d26b1f10af42ec1d193ba1ca78ef0cf4ba581
SHA256

517adcc2f8eedc64982a1ef2bc8796c87a1453654d23ec5f249d7b4aab4dce67
SHA512

888c8514092ab31a75908bec167a0239514eee0ad475775c4dd1cfcd2c763fbcf0deb696666c007b310660e1c8fb1c718ac33ab29e73312124971d73934d8dbe
SSDEEP

768:wHGGaSawqnwjRQ6ESlmFOsPoOdQtOOtEvwDpjm6WaJIOc+UPPEkLz:YGzl5wjRQBBOsP1QMOtEvwDpjgarrkLz

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1516-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012263-11.dat	CryptoLocker_rule2
behavioral1/memory/1516-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1604-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/1516-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012263-11.dat	CryptoLocker_set1
behavioral1/memory/1516-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1604-16-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1604	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1516	2024-02-03_b6847dc974e3793953768d7231f63cde_cryptolocker.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1516 wrote to memory of 1604	1516	2024-02-03_b6847dc974e3793953768d7231f63cde_cryptolocker.exe	28
PID 1516 wrote to memory of 1604	1516	2024-02-03_b6847dc974e3793953768d7231f63cde_cryptolocker.exe	28
PID 1516 wrote to memory of 1604	1516	2024-02-03_b6847dc974e3793953768d7231f63cde_cryptolocker.exe	28
PID 1516 wrote to memory of 1604	1516	2024-02-03_b6847dc974e3793953768d7231f63cde_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-03_b6847dc974e3793953768d7231f63cde_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_b6847dc974e3793953768d7231f63cde_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1516
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:1604

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\asih.exe

Filesize
36KB

MD5
107200c6817ad6814aeef322bbe6b739

SHA1
afd3d708d01bfa4da492ffe8a7aa9da85070fa8c

SHA256
bdcd088dc5c36b814cb6f94ebf4ad12e1afae04f235d58a4410ca74e48ec9fa4

SHA512
ea9af0ae1baf34b03686efc694578b2acda31380303fc733528f6132a00014363ae94470da57ec6dfe12c69ddd1c2b7477ffffab91c7af5c83e2b3176fb32be2

Download Submit
memory/1516-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1516-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1516-2-0x0000000000200000-0x0000000000206000-memory.dmp

Filesize
24KB

Download
memory/1516-3-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1516-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1604-16-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/1604-18-0x0000000000330000-0x0000000000336000-memory.dmp

Filesize
24KB

Download
memory/1604-20-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download