b1c41d1c15cf1b5124610cfa79404bd98803df8fbee092ec4b48c1f8ad7b380a

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7-20240508-en
resource tags

arch:x64arch:x86image:win7-20240508-enlocale:en-usos:windows7-x64system
submitted
20/05/2024, 06:25

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General

Target

2024-05-20_12b37a85c367efec2b9ec0149aa9ecbc_cryptolocker.exe
Size

64KB
MD5

12b37a85c367efec2b9ec0149aa9ecbc
SHA1

9b99aeba302d1ddccb4a8c9a95d8d60e50345397
SHA256

b1c41d1c15cf1b5124610cfa79404bd98803df8fbee092ec4b48c1f8ad7b380a
SHA512

148129049b0650d1196f855a4d23e82f2d748358eac26771e227b1b5462d3ac922cf7b27844803d15f27d68f5fa6eabd628068c27420f1a5d5e4d0d0499132b7
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMTIzY0:TCjsIOtEvwDpj5HE/OUHnSMj

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 4 IoCs

resource	yara_rule
behavioral1/memory/2600-8-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000c000000012286-11.dat	CryptoLocker_rule2
behavioral1/memory/1968-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/1968-25-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 4 IoCs

resource	yara_rule
behavioral1/memory/2600-8-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000c000000012286-11.dat	CryptoLocker_set1
behavioral1/memory/1968-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/1968-25-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
1968	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2600	2024-05-20_12b37a85c367efec2b9ec0149aa9ecbc_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 2600 wrote to memory of 1968	2600	2024-05-20_12b37a85c367efec2b9ec0149aa9ecbc_cryptolocker.exe	28
PID 2600 wrote to memory of 1968	2600	2024-05-20_12b37a85c367efec2b9ec0149aa9ecbc_cryptolocker.exe	28
PID 2600 wrote to memory of 1968	2600	2024-05-20_12b37a85c367efec2b9ec0149aa9ecbc_cryptolocker.exe	28
PID 2600 wrote to memory of 1968	2600	2024-05-20_12b37a85c367efec2b9ec0149aa9ecbc_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-05-20_12b37a85c367efec2b9ec0149aa9ecbc_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-05-20_12b37a85c367efec2b9ec0149aa9ecbc_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2600
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  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\misid.exe

Filesize
64KB

MD5
69dd2ebde416d99d660eb4b88be1923a

SHA1
5c38ef685e678bc10a704d03d14c2f93b370e8da

SHA256
9b3f57d82b4356d4423ad89e5a3519350a551764216ca4dcca614a9e3aa8e0ef

SHA512
817bbe689bbba49945a7acaa07fb26408e63425f1159e6f2f1ddce4bd3518d286b284780fbc35cd4a514a0ee5b08fc9fc7a6e64e33f23c1357423f7c015a3e18

Download Submit
memory/1968-15-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/1968-17-0x00000000004D0000-0x00000000004D6000-memory.dmp

Filesize
24KB

Download
memory/1968-24-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/1968-25-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2600-9-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2600-8-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2600-1-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2600-0-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download