1345499f6bf11bddb43c22bc763fe87182ed87270ef85b7d353c8c08756313b2

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
19/02/2024, 05:24

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General

Target

2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe
Size

54KB
MD5

fcb1e2b12daeb61c39f3c805519af787
SHA1

4e2038c4adf90473938d8a9425c831b632ef10f7
SHA256

1345499f6bf11bddb43c22bc763fe87182ed87270ef85b7d353c8c08756313b2
SHA512

e8e7a2d972ce852d9336bd3c3cb17d0ae5b1dafe50913a0283289024a26cbabb4e526647ea24785d4d5e8bec0fe24fd5e7f37b1e6f28311100c1dea4d67b3189
SSDEEP

1536:X6QFElP6n+gJBMOtEvwDpjBtE1yILJ0V1:X6a+BOtEvwDpjBOi

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012251-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b000000012251-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2872	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
1428	2024-02-19_fcb1e2b12daeb61c39f3c805519af787_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 1428 wrote to memory of 2872	1428	2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe	28
PID 1428 wrote to memory of 2872	1428	2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe	28
PID 1428 wrote to memory of 2872	1428	2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe	28
PID 1428 wrote to memory of 2872	1428	2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-19_fcb1e2b12daeb61c39f3c805519af787_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1428
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2872

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
55KB

MD5
66ea9d280b0956f5d02485549ccdb0da

SHA1
9696f2b2cd18ec858c87a38f117e9868f1af4883

SHA256
8cd44df9d345a9309ba0b37c3000e9bc4d5084a0de1f60907e40d16a50d8b5e7

SHA512
a48c1c0584ce82ea8505b9f5881da62bedb64078ded9a4d06d883d0d1ca130c4baacd249278a635e73ffaaa44fdacc716d81d2a9dae721719f415d9c8dfff257

Download Submit
memory/1428-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/1428-1-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/1428-8-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2872-15-0x0000000000280000-0x0000000000286000-memory.dmp

Filesize
24KB

Download
memory/2872-19-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download