a8df4cfeacff0fbd861570f1fee81affd8b7c3421d449c9b3e381e334c3e2ee2

Analysis

max time kernel
149s
max time network
152s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
27-01-2024 13:32

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General

Target

2024-01-27_63f18bb6ed55ee072caedde67bf54be6_cryptolocker.exe
Size

68KB
MD5

63f18bb6ed55ee072caedde67bf54be6
SHA1

90e25e9c44c311abd5dd65c16d3f61a5cdb30a5d
SHA256

a8df4cfeacff0fbd861570f1fee81affd8b7c3421d449c9b3e381e334c3e2ee2
SHA512

c6be6dd0dd8fb3f49640b3a1ae51c308ca02a355a89c676e72e4cb9d0d154ed8427cc8b9bc6b4afda2f209a88c153d24f4ce61e7c62ea6446ff91a7f48e0fe61
SSDEEP

1536:Dk/xY0sllyGQMOtEvwDpjwycDtKkQZQRKb61vSbgZ3QzNKUNZv:DW60sllyWOtEvwDpjwF85N

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2400-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00080000000120f8-11.dat	CryptoLocker_rule2
behavioral1/memory/2400-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2652-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2400-0-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00080000000120f8-11.dat	CryptoLocker_set1
behavioral1/memory/2400-15-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2652-17-0x0000000000500000-0x000000000050B000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2652	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2400	2024-01-27_63f18bb6ed55ee072caedde67bf54be6_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 2400 wrote to memory of 2652	2400	2024-01-27_63f18bb6ed55ee072caedde67bf54be6_cryptolocker.exe	28
PID 2400 wrote to memory of 2652	2400	2024-01-27_63f18bb6ed55ee072caedde67bf54be6_cryptolocker.exe	28
PID 2400 wrote to memory of 2652	2400	2024-01-27_63f18bb6ed55ee072caedde67bf54be6_cryptolocker.exe	28
PID 2400 wrote to memory of 2652	2400	2024-01-27_63f18bb6ed55ee072caedde67bf54be6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-27_63f18bb6ed55ee072caedde67bf54be6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-27_63f18bb6ed55ee072caedde67bf54be6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2400
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2652

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
68KB

MD5
53379ea6e41c726902039632199dbbb6

SHA1
c07f2a362e0cd195784d2604be44e89c6821a272

SHA256
de2b5051bba876f96ca2fa8f2b980dff09d17e578bb0f4ca9c1f4ac93b6d8624

SHA512
80a8467b855c56e1dc445655523d0fc3da06b49f5ef2d2ed68f1b468c6ce1d634766aad599d14cc2956b07ae54147f0325ccd2d8db5322629192738a6ff34504

Download Submit
memory/2400-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2400-0-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2400-3-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2400-2-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2400-15-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2400-14-0x00000000020A0000-0x00000000020AB000-memory.dmp

Filesize
44KB

Download
memory/2652-17-0x0000000000500000-0x000000000050B000-memory.dmp

Filesize
44KB

Download
memory/2652-19-0x0000000000270000-0x0000000000276000-memory.dmp

Filesize
24KB

Download
memory/2652-23-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download