7919884767be58da6c4a2ada15688dac83371f61a7d52663384756cc2c750b3f

Analysis

max time kernel
8s
max time network
125s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/06/2024, 09:27

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General

Target

2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe
Size

34KB
MD5

249bf87691896f9eebc54d76ec6f7bd7
SHA1

fba85151536c76b183e82f22fbe1592c2e775c68
SHA256

7919884767be58da6c4a2ada15688dac83371f61a7d52663384756cc2c750b3f
SHA512

71ab68378d13e63fa7ca5b66e0b62f02ab1ec839930b002ab753beff5a3ce82328e71d3868baa665a51dfde240238037f606f87e6e13f21918e0ffd56ac44b37
SSDEEP

384:bM7Q0pjC4GybxMv01d3AcASBQMf6i/zzzcYgUPSznStEkcsgqDxcR:b/yC4GyNM01GuQMNXw2PSjSKkcJecR

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001445e-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2932	retln.exe

Loads dropped DLL 1 IoCs

pid	Process
2256	2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_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
2256	2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe
2932	retln.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2256 wrote to memory of 2932	2256	2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe	28
PID 2256 wrote to memory of 2932	2256	2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe	28
PID 2256 wrote to memory of 2932	2256	2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe	28
PID 2256 wrote to memory of 2932	2256	2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-09_249bf87691896f9eebc54d76ec6f7bd7_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2256
- 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:2932

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
35KB

MD5
d95722a83af5f8c3828e047da961a594

SHA1
e1b5c421d554c88018f0f521403e0c3e9724befa

SHA256
2eeccfc4c9120df26dec80e2bcef90541f088e0b63c7580298d9b9f4e716fc1a

SHA512
282f8590467c67e9747cde1d6bf5de691dbde3bb58fbc1e4d6f946ce53436ead7d86f36a576a535ae7294bbf5564eb8775871448508ce1790db909221592c432

Download Submit
memory/2256-0-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2256-8-0x00000000002E0000-0x00000000002E6000-memory.dmp

Filesize
24KB

Download
memory/2256-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2932-23-0x00000000003C0000-0x00000000003C6000-memory.dmp

Filesize
24KB

Download