c5fead6e01d1bcf573496897b4df39acefcbb29c0210b89bad7217850bacc0dc

Analysis

max time kernel
148s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
30-05-2024 12:31

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General

Target

2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe
Size

51KB
MD5

a53c22b4454dacefe71e4635f1753169
SHA1

de4057f6afc388cf5ecbff3a2a3c601b6437e4f0
SHA256

c5fead6e01d1bcf573496897b4df39acefcbb29c0210b89bad7217850bacc0dc
SHA512

c8d078e4f61602ef3fcb7e4fde9c67a61c880e9e0bd9c75c0fb50f44d30a3bcc9932efe84adb6d7d776f1c78a70e4d0ee2cc7dba99b27d5230d45e37e8c6302b
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Moc54:qmbhXDmjr5MOtEvwDpj5cDtKkQZQ+4

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1920-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000d00000001227e-11.dat	CryptoLocker_rule2
behavioral1/memory/1920-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2620-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 2 IoCs

resource	yara_rule
behavioral1/memory/1920-15-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2620-26-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 4 IoCs

resource	yara_rule
behavioral1/memory/1920-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x000d00000001227e-11.dat	UPX
behavioral1/memory/1920-15-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2620-26-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2620	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1920	2024-05-30_a53c22b4454dacefe71e4635f1753169_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 1920 wrote to memory of 2620	1920	2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe	28
PID 1920 wrote to memory of 2620	1920	2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe	28
PID 1920 wrote to memory of 2620	1920	2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe	28
PID 1920 wrote to memory of 2620	1920	2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-30_a53c22b4454dacefe71e4635f1753169_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1920
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2620

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
51KB

MD5
f80df923336af4b21c0cb67951f7fa13

SHA1
9cc0d35ef1d0133f4caa0e0702b20342301c0c11

SHA256
21ab0876e668de8ded0960cfd702aeb5e27690b4cddf0c56a76123fe0a0c7757

SHA512
937c2a77a81ccdc32277051215365d10149e7e03afed2dd40f50b2934d0f871546f390ce4dae6629cc49acd7d91eeab01c99ff38c9938c677e745da7b0ed9610

Download Submit
memory/1920-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1920-1-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1920-2-0x00000000004C0000-0x00000000004C6000-memory.dmp

Filesize
24KB

Download
memory/1920-9-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/1920-15-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/1920-16-0x0000000002BC0000-0x0000000002BD0000-memory.dmp

Filesize
64KB

Download
memory/2620-25-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2620-18-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download
memory/2620-26-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download