0ea39d08f33cb112bc98e652f11e0855d6c22231731eb310658766be5f60f62c

Analysis

max time kernel
3s
max time network
81s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
19-04-2024 00:49

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General

Target

2024-04-19_2ad634adeb4056dd4a3d80d069df74ff_cryptolocker.exe
Size

42KB
MD5

2ad634adeb4056dd4a3d80d069df74ff
SHA1

1103d4881c4ebca51d1e8d041fe520a5797e0141
SHA256

0ea39d08f33cb112bc98e652f11e0855d6c22231731eb310658766be5f60f62c
SHA512

9c0fb4585548bfa06080677d192a0dbcf3667107386c1722b9ac18ff9446e5aa0428ca5596e2e47fc6e5f72c8bc468f4abfb2ee670ac39610418d7ce3f30897c
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PAe:b/pYayGig5HjS3NPAe

Score

9^/10

discovery

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a00000001224e-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2176	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2212	2024-04-19_2ad634adeb4056dd4a3d80d069df74ff_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
2212	2024-04-19_2ad634adeb4056dd4a3d80d069df74ff_cryptolocker.exe
2176	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2212 wrote to memory of 2176	2212	2024-04-19_2ad634adeb4056dd4a3d80d069df74ff_cryptolocker.exe	28
PID 2212 wrote to memory of 2176	2212	2024-04-19_2ad634adeb4056dd4a3d80d069df74ff_cryptolocker.exe	28
PID 2212 wrote to memory of 2176	2212	2024-04-19_2ad634adeb4056dd4a3d80d069df74ff_cryptolocker.exe	28
PID 2212 wrote to memory of 2176	2212	2024-04-19_2ad634adeb4056dd4a3d80d069df74ff_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-19_2ad634adeb4056dd4a3d80d069df74ff_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-19_2ad634adeb4056dd4a3d80d069df74ff_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2212
- 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:2176

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
42KB

MD5
ad72f1826ea92e9fe861b8498ae622b3

SHA1
08f745cca0b419d2c6b685660c7621f27c99d7fb

SHA256
3703b8431083b32ac918e37586811349617a321adc195ee1a519865197d28732

SHA512
031cc872cabb4d018764515340c337df903a4e12fd3b8ac3568a9f29867505dded737055f4fd77e65c53528e84f1dbda36a8aee54280a8026ecd19f959426475

Download Submit
memory/2176-16-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download
memory/2212-0-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download
memory/2212-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2212-8-0x00000000004F0000-0x00000000004F6000-memory.dmp

Filesize
24KB

Download