af974a9fdf3b2dbedb1e69feb9c671a11d686e68ea4ab474cda91392a512fbf6

Analysis

max time kernel
119s
max time network
121s
platform
windows7_x64
resource
win7-20240220-en
resource tags

arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system
submitted
14/03/2024, 07:40

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General

Target

2024-03-14_6a3f9f65186107c01d82e78ffddcffd6_cryptolocker.exe
Size

42KB
MD5

6a3f9f65186107c01d82e78ffddcffd6
SHA1

16321875d8b572eb2147f375d20ed4475b27c9ca
SHA256

af974a9fdf3b2dbedb1e69feb9c671a11d686e68ea4ab474cda91392a512fbf6
SHA512

8cb26c07b0b11d36f74dd0199b86ddd0814458e0b646fda257152881b6c227cb8d390b89250d292076df4dffd792937bea9508262f5434d49c06a2b9d7d6f871
SSDEEP

768:b/yC4GyNM01GuQMNXw2PSjHPbSuYlW8PA9Dx:b/pYayGig5HjS3NPA9Dx

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224d-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2168	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2960	2024-03-14_6a3f9f65186107c01d82e78ffddcffd6_cryptolocker.exe

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
2960	2024-03-14_6a3f9f65186107c01d82e78ffddcffd6_cryptolocker.exe
2168	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2960 wrote to memory of 2168	2960	2024-03-14_6a3f9f65186107c01d82e78ffddcffd6_cryptolocker.exe	28
PID 2960 wrote to memory of 2168	2960	2024-03-14_6a3f9f65186107c01d82e78ffddcffd6_cryptolocker.exe	28
PID 2960 wrote to memory of 2168	2960	2024-03-14_6a3f9f65186107c01d82e78ffddcffd6_cryptolocker.exe	28
PID 2960 wrote to memory of 2168	2960	2024-03-14_6a3f9f65186107c01d82e78ffddcffd6_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-14_6a3f9f65186107c01d82e78ffddcffd6_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-14_6a3f9f65186107c01d82e78ffddcffd6_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2960
- 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:2168

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\retln.exe

Filesize
42KB

MD5
7c52a4b087d5d281887e71f466911190

SHA1
5a0d1966cf5d419a90ca6ef8585c1291e9423d90

SHA256
3a36c02826a53ac96e08bd76ae2ac278f8db51f4e09ccb2193e92f6dae2a10ba

SHA512
04a9ecc625c43b15ed487ab54472554f2b24a2d8b0d6b1fab7c65c138206b847fe4e3f4987f6071d57d52b06d3510d330b3b18544fe01736219f78947f9ff90d

Download Submit
memory/2168-23-0x0000000000290000-0x0000000000296000-memory.dmp

Filesize
24KB

Download
memory/2960-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2960-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2960-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download