17f98824adba361d0bf07c83a796d4f500e691c5fcf850406fef9a231224c1b5

Analysis

max time kernel
0s
max time network
127s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
06/06/2024, 03:45

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General

Target

2024-06-06_a914083371ae35e53c6d83b81a492d41_cryptolocker.exe
Size

33KB
MD5

a914083371ae35e53c6d83b81a492d41
SHA1

57640e58b1ccf2351a5147e24a64c583b78380d3
SHA256

17f98824adba361d0bf07c83a796d4f500e691c5fcf850406fef9a231224c1b5
SHA512

7db13aab1b3453bad7f753700e55c3fbbcf5b48866153ba622ed7d970b021f902c4411051970869c4fbd629abb3e683fb388cc060d91f6eaf1d6be390b66ac9a
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgYl:b/yC4GyNM01GuQMNXw2PSjSKkcJYl

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000d000000012336-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2596	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2184	2024-06-06_a914083371ae35e53c6d83b81a492d41_cryptolocker.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
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
2184	2024-06-06_a914083371ae35e53c6d83b81a492d41_cryptolocker.exe
2596	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2184 wrote to memory of 2596	2184	2024-06-06_a914083371ae35e53c6d83b81a492d41_cryptolocker.exe	28
PID 2184 wrote to memory of 2596	2184	2024-06-06_a914083371ae35e53c6d83b81a492d41_cryptolocker.exe	28
PID 2184 wrote to memory of 2596	2184	2024-06-06_a914083371ae35e53c6d83b81a492d41_cryptolocker.exe	28
PID 2184 wrote to memory of 2596	2184	2024-06-06_a914083371ae35e53c6d83b81a492d41_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-06_a914083371ae35e53c6d83b81a492d41_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-06_a914083371ae35e53c6d83b81a492d41_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2184
- C:\Users\Admin\AppData\Local\Temp\retln.exe
  "C:\Users\Admin\AppData\Local\Temp\retln.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:2596

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\retln.exe

Filesize
33KB

MD5
be2b63cf4d27354c4469265b056f1f73

SHA1
de2b3875c4d55f0143463b53ec00d85d92a2172e

SHA256
ef1928eed1e72d49d2222d5e2e88078841151930f3b9c9237f10a354f7ccce81

SHA512
ae8ec71627b85f506ce4a70a4c478b4bdbf2abc7fee776d733669fad96c26d9b6f383a09a69065b4e03579bc71c0489fc37e84b3ab43c93a68602058c8226095

Download Submit
memory/2184-0-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2184-8-0x00000000003A0000-0x00000000003A6000-memory.dmp

Filesize
24KB

Download
memory/2184-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2596-19-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download