fbc1f90571ab347149ed0fc82a7fcf422d66535b21262860511fee6667a749a7

Analysis

max time kernel
148s
max time network
148s
platform
windows7_x64
resource
win7-20231129-en
resource tags

arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system
submitted
13/02/2024, 10:25

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General

Target

2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe
Size

43KB
MD5

179ac054b07b72bd7e40d6f94e506fed
SHA1

5ab2563c3a9be72d5966d013560b9a6354665db8
SHA256

fbc1f90571ab347149ed0fc82a7fcf422d66535b21262860511fee6667a749a7
SHA512

d6339238533e61f995fa73e94c22828dcb26b4cf5624ac845774cb2a15e253b69a89aaef4dd405447b3d671b916ad63210277dee8a329361c8e6d98ed6cc47c6
SSDEEP

768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphedj:bc/y2lkF0+Be8

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x0009000000014a5b-10.dat	CryptoLocker_rule2

Executes dropped EXE 1 IoCs

pid	Process
1968	rewok.exe

Loads dropped DLL 1 IoCs

pid	Process
628	2024-02-13_179ac054b07b72bd7e40d6f94e506fed_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
628	2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe
1968	rewok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 628 wrote to memory of 1968	628	2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe	28
PID 628 wrote to memory of 1968	628	2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe	28
PID 628 wrote to memory of 1968	628	2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe	28
PID 628 wrote to memory of 1968	628	2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-02-13_179ac054b07b72bd7e40d6f94e506fed_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:628
- C:\Users\Admin\AppData\Local\Temp\rewok.exe
  "C:\Users\Admin\AppData\Local\Temp\rewok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:1968

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\rewok.exe

Filesize
44KB

MD5
23894b2e75fab84d4056b9d52632f6f4

SHA1
38115b418dc87cc8f011756e7caa1942dfe15d39

SHA256
91b808a888260e6144f7cacbe620cd151df4dd51ab752a048d755b5b6c70649f

SHA512
d250832be0b3bc91df5ad51b95d5b33fbed93501e9cda19457d6d4813e162329ecd193d3c25afc4cd64f256f34e4d620fcd0860963c2aa34f5e6276b6afe5898

Download Submit
memory/628-0-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/628-2-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/628-1-0x00000000003F0000-0x00000000003F6000-memory.dmp

Filesize
24KB

Download
memory/1968-23-0x0000000000300000-0x0000000000306000-memory.dmp

Filesize
24KB

Download