5465b5102fe150c2295e1b71b0cf9bd95b7abe7c81e3a153655ab3d6e8a3679a

Analysis

max time kernel
149s
max time network
149s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
09/05/2024, 18:44

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General

Target

2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe
Size

42KB
MD5

3fab226e2695d745a4c7b2606eff16e8
SHA1

fb69460381e3c1995aa971cf715a46580493004b
SHA256

5465b5102fe150c2295e1b71b0cf9bd95b7abe7c81e3a153655ab3d6e8a3679a
SHA512

74970c2167e02d502e4a81489c3f8f02a43059a3174ea3bceaf3d7941f7e2aa74f2433ceabc97e3d5aa38e476d7e52a42e1610fb48b3659326cc06f346cc955f
SSDEEP

768:bCDOw9UiaKHfjnD0S16avdrQFiLjJvtAydI:bCDOw9aMDooc+vAym

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/1924-0-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b000000015bb9-11.dat	CryptoLocker_rule2
behavioral1/memory/1924-15-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1648-18-0x0000000008000000-0x000000000800A000-memory.dmp	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1648	lossy.exe

Loads dropped DLL 1 IoCs

pid	Process
1924	2024-05-09_3fab226e2695d745a4c7b2606eff16e8_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 1924 wrote to memory of 1648	1924	2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe	28
PID 1924 wrote to memory of 1648	1924	2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe	28
PID 1924 wrote to memory of 1648	1924	2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe	28
PID 1924 wrote to memory of 1648	1924	2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-09_3fab226e2695d745a4c7b2606eff16e8_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1924
- C:\Users\Admin\AppData\Local\Temp\lossy.exe
  "C:\Users\Admin\AppData\Local\Temp\lossy.exe"
  2⤵
  - Executes dropped EXE
  PID:1648

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\lossy.exe

Filesize
43KB

MD5
84786bf6ee597a31fd8a9db1ab7c772d

SHA1
86cf50062a5a1d459f68254219233451a477b0a4

SHA256
456384ecb38e0725131d89ea9fee51ab31d9e54cf6cb7173fb1c17114b59063f

SHA512
b6f89ed7039c8c8d9dd1d799815a63c161d6cfa34f42f4ca7ff0cea74748f5dc0f9ed8bb44dc7e39dfd4365e2169adbfaa4e1099ebe7819a2a7babd20316fe98

Download Submit
memory/1648-19-0x00000000020A0000-0x00000000020A6000-memory.dmp

Filesize
24KB

Download
memory/1648-18-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1648-17-0x0000000001C50000-0x0000000001C56000-memory.dmp

Filesize
24KB

Download
memory/1924-0-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download
memory/1924-1-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1924-2-0x0000000000350000-0x0000000000356000-memory.dmp

Filesize
24KB

Download
memory/1924-3-0x0000000000390000-0x0000000000396000-memory.dmp

Filesize
24KB

Download
memory/1924-15-0x0000000008000000-0x000000000800A000-memory.dmp

Filesize
40KB

Download