d4396335f754bdeb6c342ac2360a53b021dfb16dac85b545b13bf566da611c41

Analysis

max time kernel
149s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
07-06-2024 20:00

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General

Target

2024-06-07_4da90eb3defee1717a51de7a18fedbf1_cryptolocker.exe
Size

391KB
MD5

4da90eb3defee1717a51de7a18fedbf1
SHA1

acbef2d47eb4afd14245393f2221d14d20347b1b
SHA256

d4396335f754bdeb6c342ac2360a53b021dfb16dac85b545b13bf566da611c41
SHA512

9b5058ffd0697ba7d51bbf6b7ae63e4a085ab9dfe9f4a5b9e00b67eecbe686146e87f201ce845c416f4af8d4305a88206da96688160647b0b015c1233b92ab90
SSDEEP

6144:nnOsaQgAOjvrZFODJjBz3j1jTqQy6v2GGnugOtihzXRo:nnOflT/ZFIjBz3xjTxynGUOUhXRo

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001560a-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
2520	hasfj.exe

Loads dropped DLL 1 IoCs

pid	Process
1400	2024-06-07_4da90eb3defee1717a51de7a18fedbf1_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 1400 wrote to memory of 2520	1400	2024-06-07_4da90eb3defee1717a51de7a18fedbf1_cryptolocker.exe	28
PID 1400 wrote to memory of 2520	1400	2024-06-07_4da90eb3defee1717a51de7a18fedbf1_cryptolocker.exe	28
PID 1400 wrote to memory of 2520	1400	2024-06-07_4da90eb3defee1717a51de7a18fedbf1_cryptolocker.exe	28
PID 1400 wrote to memory of 2520	1400	2024-06-07_4da90eb3defee1717a51de7a18fedbf1_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-06-07_4da90eb3defee1717a51de7a18fedbf1_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-06-07_4da90eb3defee1717a51de7a18fedbf1_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1400
- C:\Users\Admin\AppData\Local\Temp\hasfj.exe
  "C:\Users\Admin\AppData\Local\Temp\hasfj.exe"
  2⤵
  - Executes dropped EXE
  PID:2520

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\hasfj.exe

Filesize
391KB

MD5
9d034b71455dff731b5c29676d764fef

SHA1
82e14f43797d37242ccb054e4ea4d94d73f3752f

SHA256
bdf8917b5a6566512c8ba2547c33166a0be185fcd60492181764c4f0dcde844a

SHA512
32dbb603515cca234b15b99af0bb3091b4856764ccd8df46b448f6dbd7c6b5385bccbe5d1966f3aee7a89224a1c05f80eb8d48db32cc42a615ce9a23a34f920d

Download Submit
memory/1400-0-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/1400-8-0x00000000002F0000-0x00000000002F6000-memory.dmp

Filesize
24KB

Download
memory/1400-1-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2520-15-0x0000000000410000-0x0000000000416000-memory.dmp

Filesize
24KB

Download
memory/2520-22-0x00000000003E0000-0x00000000003E6000-memory.dmp

Filesize
24KB

Download