834d2e639dcd2209277c8a99de54f13d6b0e5b4b6cc6b7221b5baddf352aec13

Analysis

max time kernel
149s
max time network
150s
platform
windows7_x64
resource
win7-20240221-en
resource tags

arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system
submitted
03-05-2024 20:15

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General

Target

2024-05-03_f1f33568e8e900b37193dde7cdb4fbb2_cryptolocker.exe
Size

64KB
MD5

f1f33568e8e900b37193dde7cdb4fbb2
SHA1

00efc91fc6964123c44dd50eb5730068e1f27303
SHA256

834d2e639dcd2209277c8a99de54f13d6b0e5b4b6cc6b7221b5baddf352aec13
SHA512

9b7234020ee675cb3d109819983124084be9778defb975456cdfd9a61d57d71a944c74fd7bc825db02f73aa2dae672717f67d191f85cba2d62a8fd8a661ed02c
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2l9tMPvdwrt:TCjsIOtEvwDpj5HE/OUHnSMYd

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2584-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00080000000122cd-11.dat	CryptoLocker_rule2
behavioral1/memory/2584-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2608-25-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2584-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x00080000000122cd-11.dat	CryptoLocker_set1
behavioral1/memory/2584-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2608-25-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2608	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2584	2024-05-03_f1f33568e8e900b37193dde7cdb4fbb2_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 2584 wrote to memory of 2608	2584	2024-05-03_f1f33568e8e900b37193dde7cdb4fbb2_cryptolocker.exe	28
PID 2584 wrote to memory of 2608	2584	2024-05-03_f1f33568e8e900b37193dde7cdb4fbb2_cryptolocker.exe	28
PID 2584 wrote to memory of 2608	2584	2024-05-03_f1f33568e8e900b37193dde7cdb4fbb2_cryptolocker.exe	28
PID 2584 wrote to memory of 2608	2584	2024-05-03_f1f33568e8e900b37193dde7cdb4fbb2_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-03_f1f33568e8e900b37193dde7cdb4fbb2_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-03_f1f33568e8e900b37193dde7cdb4fbb2_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2584
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2608

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\misid.exe

Filesize
64KB

MD5
3aca3ecd172ec6f6b75c92c08e1bbd23

SHA1
af377ae6656bcceeea5c03d59eecc3457359aa6b

SHA256
c23417e147a265f7da95063b9c0c43fcad4b566e63f142d9f2083bc28668213c

SHA512
aaf83f25470c5816da311b94cd5fbc95dcd66eec4379c91abe8eaa990363f9196a9af3167d6e8aa046571262acab72cd3a540c9c0f833450c392b7401029434a

Download Submit
memory/2584-2-0x0000000000380000-0x0000000000386000-memory.dmp

Filesize
24KB

Download
memory/2584-1-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2584-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2584-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2584-15-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2608-17-0x00000000002A0000-0x00000000002A6000-memory.dmp

Filesize
24KB

Download
memory/2608-24-0x00000000001D0000-0x00000000001D6000-memory.dmp

Filesize
24KB

Download
memory/2608-25-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download