65f618327828eb487d9af368c7661d068702b8ecb981fc76779281336cc1e589

Analysis

max time kernel
136s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
03/02/2024, 04:09

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General

Target

2024-02-03_8f14bf224e976245d93af4f650117798_cryptolocker.exe
Size

60KB
MD5

8f14bf224e976245d93af4f650117798
SHA1

831984f718573adc707259cefa0d915db41712a8
SHA256

65f618327828eb487d9af368c7661d068702b8ecb981fc76779281336cc1e589
SHA512

be1150bb24cdd8fc44d755cf9886e15fee13cf69fc681306aaee8825b28b2cb82c2f4710623b041758efd65181d5fa2aed3b08407d8f6321c050784354df10c5
SSDEEP

1536:X6QFElP6n+gJQMOtEvwDpjBccD2RuoNmuBLZ/x2:X6a+SOtEvwDpjBrOE

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012287-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000a000000012287-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2660	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2240	2024-02-03_8f14bf224e976245d93af4f650117798_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 2240 wrote to memory of 2660	2240	2024-02-03_8f14bf224e976245d93af4f650117798_cryptolocker.exe	28
PID 2240 wrote to memory of 2660	2240	2024-02-03_8f14bf224e976245d93af4f650117798_cryptolocker.exe	28
PID 2240 wrote to memory of 2660	2240	2024-02-03_8f14bf224e976245d93af4f650117798_cryptolocker.exe	28
PID 2240 wrote to memory of 2660	2240	2024-02-03_8f14bf224e976245d93af4f650117798_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-03_8f14bf224e976245d93af4f650117798_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-03_8f14bf224e976245d93af4f650117798_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2240
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2660

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\asih.exe

Filesize
60KB

MD5
e9a3db747eda8bd56e177e11a459333a

SHA1
63843975ede401c8fd2ca33f6bf5d98e647a1caf

SHA256
e40ce61e4e46f8c4003332c277fc9f3f806401b04452251b7392d15848af56f7

SHA512
ea66e16bf9ab0a534c18b1017daf6ba4ed741308798712a3ac604faa685af943ea665d1fe48733d3fe51052752445bc7ef2ba9e8787cdcf921b202f93f8cb54a

Download Submit
memory/2240-0-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2240-1-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/2240-3-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2660-15-0x0000000000450000-0x0000000000456000-memory.dmp

Filesize
24KB

Download
memory/2660-16-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download