91b585725b89a3d9951ec47dcd6588f602889d8bd656ffc9598a407a222a55d5

Analysis

max time kernel
150s
max time network
151s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
16-03-2024 05:01

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General

Target

2024-03-16_e5b15db2a9f9464eab6e77bad0bf7c32_cryptolocker.exe
Size

63KB
MD5

e5b15db2a9f9464eab6e77bad0bf7c32
SHA1

95df230b45d70e61b448e52123a1a046c09fa11e
SHA256

91b585725b89a3d9951ec47dcd6588f602889d8bd656ffc9598a407a222a55d5
SHA512

a048b890a9c394ab0efd7236c0a6bd39eb4739dde818de1bc61df8a5276fb3b060d454da42186e58452d0f3ea3bdf79ef6bc351029bdccda2831e0857e328f60
SSDEEP

1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x/9lfL+gniDScGW:aq7tdgI2MyzNORQtOflIwoHNV2XBFV73

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224f-10.dat	CryptoLocker_rule2

Detection of Cryptolocker Samples 1 IoCs

resource	yara_rule
behavioral1/files/0x000b00000001224f-10.dat	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2148	hurok.exe

Loads dropped DLL 1 IoCs

pid	Process
2932	2024-03-16_e5b15db2a9f9464eab6e77bad0bf7c32_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
2932	2024-03-16_e5b15db2a9f9464eab6e77bad0bf7c32_cryptolocker.exe
2148	hurok.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2932 wrote to memory of 2148	2932	2024-03-16_e5b15db2a9f9464eab6e77bad0bf7c32_cryptolocker.exe	28
PID 2932 wrote to memory of 2148	2932	2024-03-16_e5b15db2a9f9464eab6e77bad0bf7c32_cryptolocker.exe	28
PID 2932 wrote to memory of 2148	2932	2024-03-16_e5b15db2a9f9464eab6e77bad0bf7c32_cryptolocker.exe	28
PID 2932 wrote to memory of 2148	2932	2024-03-16_e5b15db2a9f9464eab6e77bad0bf7c32_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-16_e5b15db2a9f9464eab6e77bad0bf7c32_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-16_e5b15db2a9f9464eab6e77bad0bf7c32_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2932
- 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:2148

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
64KB

MD5
c406024b4da39cd7290ba853df14cb7a

SHA1
4668cb1f34e19118c75db7f9c683e678df5223ca

SHA256
10f281f3784bba8a8072be12bf2f1fd406c69a7f2836537e20d8dd6f7795d383

SHA512
a177080db37e276fbbdf416584f88ec608d871da8c94c9466845ef410725fb73a20dd256cc09763de3509b98f1aceefe1d55e4147103cbe69648d69befed802d

Download Submit
memory/2148-16-0x00000000002B0000-0x00000000002B6000-memory.dmp

Filesize
24KB

Download
memory/2932-0-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2932-2-0x0000000000230000-0x0000000000236000-memory.dmp

Filesize
24KB

Download
memory/2932-1-0x0000000000400000-0x0000000000406000-memory.dmp

Filesize
24KB

Download