818c212f95bd24861bbfacac4cf2a9e307aa58b2f5bd7bf1f0815c4e36ed45d0

Analysis

max time kernel
152s
max time network
156s
platform
windows7_x64
resource
win7-20231215-en
resource tags

arch:x64arch:x86image:win7-20231215-enlocale:en-usos:windows7-x64system
submitted
26-01-2024 01:31

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General

Target

2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe
Size

63KB
MD5

2ad261b268f02efa503978afb41bbef3
SHA1

8229c3750ee39d2a9a3d58d4a9f3c4a2ed9e8b52
SHA256

818c212f95bd24861bbfacac4cf2a9e307aa58b2f5bd7bf1f0815c4e36ed45d0
SHA512

ac2201e7a8fce074d1a5bab1f1393fd515a61270d8d8e72b9605edca8fb12cfa0ea881f224a33421a1006dbcb846188a4aa5a944af5ad6d8d751a1d0dbdbfd64
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDSA9k:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7W

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000013a04-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000c000000013a04-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2840	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2084	2024-01-26_2ad261b268f02efa503978afb41bbef3_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
2084	2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe
2840	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2084 wrote to memory of 2840	2084	2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe	28
PID 2084 wrote to memory of 2840	2084	2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe	28
PID 2084 wrote to memory of 2840	2084	2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe	28
PID 2084 wrote to memory of 2840	2084	2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-01-26_2ad261b268f02efa503978afb41bbef3_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2084
- 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:2840

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
63KB

MD5
eb900a1b79f88c837d2971d6f2797b87

SHA1
3237f74334b8317c8ffd1ef3ac8a9feef0f64240

SHA256
71bfb6e62e6a6aca513bbe2a9359827829cd4390b2d97f96ea73d1b1a67f6be8

SHA512
6a158953c0f3d14ebb8904555abf0d1a045abe6680e05426df57a90bbff2d221ae7934985989ab5a70bea4b547469b66f8f4fb7a7b5f47bc731b3651ae3a66b6

Download Submit
memory/2084-0-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2084-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download
memory/2084-2-0x0000000000310000-0x0000000000316000-memory.dmp

Filesize
24KB

Download
memory/2840-17-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download