3a1c55a176ab9c45b62da0aa6aefe6c234e4811e4db6a2c83240564b947a531e

Analysis

max time kernel
150s
max time network
153s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
28/04/2024, 04:46

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General

Target

2024-04-28_b3d23378754a9e941c348ef8e9ff2f9d_cryptolocker.exe
Size

67KB
MD5

b3d23378754a9e941c348ef8e9ff2f9d
SHA1

6db89799c2e2f862d09a7984e1886d8e72e6b6c8
SHA256

3a1c55a176ab9c45b62da0aa6aefe6c234e4811e4db6a2c83240564b947a531e
SHA512

1a5403de83ed3ebb3fe397e93213d6e4daf7719af7ea6fa018e9d927418d670a3da9f25f821003c512897584c06e771d7577c260b0a9c16da530b4f0242bd3c7
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszudnYTjipvF293vaRLB:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7g

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001445e-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c00000001445e-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
3016	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2868	2024-04-28_b3d23378754a9e941c348ef8e9ff2f9d_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
2868	2024-04-28_b3d23378754a9e941c348ef8e9ff2f9d_cryptolocker.exe
3016	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2868 wrote to memory of 3016	2868	2024-04-28_b3d23378754a9e941c348ef8e9ff2f9d_cryptolocker.exe	28
PID 2868 wrote to memory of 3016	2868	2024-04-28_b3d23378754a9e941c348ef8e9ff2f9d_cryptolocker.exe	28
PID 2868 wrote to memory of 3016	2868	2024-04-28_b3d23378754a9e941c348ef8e9ff2f9d_cryptolocker.exe	28
PID 2868 wrote to memory of 3016	2868	2024-04-28_b3d23378754a9e941c348ef8e9ff2f9d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-28_b3d23378754a9e941c348ef8e9ff2f9d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-28_b3d23378754a9e941c348ef8e9ff2f9d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2868
- C:\Users\Admin\AppData\Local\Temp\hurok.exe
  "C:\Users\Admin\AppData\Local\Temp\hurok.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious use of UnmapMainImage
  PID:3016

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\hurok.exe

Filesize
68KB

MD5
79b93caa75f8042b74e10e12700efe0c

SHA1
2648bee1d5246bf755db7f9eb87cfdf26b0402e8

SHA256
e52a8f879305366895d1acf6a86ad5f3c1491abf0cde5e02b49350ac5d86952e

SHA512
cae534969553b2935c9ef01acf1c2acb6da94d9b67c14a450b8b979331ab951633b5dc2d86dfacb5ae06a0e92361fd3328c89e589fce9c0a94e3c54bdbde3069

Download Submit
memory/2868-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2868-8-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2868-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/3016-23-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download