ba56efb9da1477551c0eb699298da61c7d14d011036490603487453b68c5c47a

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
29/03/2024, 04:05

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General

Target

2024-03-29_d00b77ffcac2dccc2e2e27ce0d28ac38_cryptolocker.exe
Size

81KB
MD5

d00b77ffcac2dccc2e2e27ce0d28ac38
SHA1

05308ca88fb6f980570bd0c9ff569ceae6b6eee4
SHA256

ba56efb9da1477551c0eb699298da61c7d14d011036490603487453b68c5c47a
SHA512

4b28d489c2eaec57daaebbecaa15a4c9d240ecb109dba6c4758b168fe102bae2ddd3264f0feb52ba7413e7ae0f225d4c6135b79f504f0390eaa7760b2c05a661
SSDEEP

1536:Tj+jsMQMOtEvwDpj5HmpJpOUHECgNMo0vp2EMMAe:TCjsIOtEvwDpj5HE/OUHnSMB

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 5 IoCs

resource	yara_rule
behavioral1/memory/2928-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x000b00000001224f-11.dat	CryptoLocker_rule2
behavioral1/memory/2928-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2852-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2852-25-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 5 IoCs

resource	yara_rule
behavioral1/memory/2928-0-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/files/0x000b00000001224f-11.dat	CryptoLocker_set1
behavioral1/memory/2928-15-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2852-16-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2852-25-0x0000000000500000-0x000000000050E000-memory.dmp	CryptoLocker_set1

Executes dropped EXE 1 IoCs

pid	Process
2852	misid.exe

Loads dropped DLL 1 IoCs

pid	Process
2928	2024-03-29_d00b77ffcac2dccc2e2e27ce0d28ac38_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 2928 wrote to memory of 2852	2928	2024-03-29_d00b77ffcac2dccc2e2e27ce0d28ac38_cryptolocker.exe	28
PID 2928 wrote to memory of 2852	2928	2024-03-29_d00b77ffcac2dccc2e2e27ce0d28ac38_cryptolocker.exe	28
PID 2928 wrote to memory of 2852	2928	2024-03-29_d00b77ffcac2dccc2e2e27ce0d28ac38_cryptolocker.exe	28
PID 2928 wrote to memory of 2852	2928	2024-03-29_d00b77ffcac2dccc2e2e27ce0d28ac38_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-03-29_d00b77ffcac2dccc2e2e27ce0d28ac38_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-03-29_d00b77ffcac2dccc2e2e27ce0d28ac38_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2928
- C:\Users\Admin\AppData\Local\Temp\misid.exe
  "C:\Users\Admin\AppData\Local\Temp\misid.exe"
  2⤵
  - Executes dropped EXE
  PID:2852

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
81KB

MD5
11b9f0cf01e32a4510179ce95beebcba

SHA1
d1d0e1ea2d72cc73a2d917c3d48ea39e1e257f4b

SHA256
028e0a9386c5643e5b9c09ea246f8edc2116efd7f7656094cad679d6c779442f

SHA512
42a0c374531dd2f154d1e8522059f7c2249953d5e834a67f73390903de8a75b2e558918c101c60dbb2df4a579dec83b837254b4f708063ab7af16a2b4c128abb

Download Submit
memory/2852-16-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2852-18-0x00000000004A0000-0x00000000004A6000-memory.dmp

Filesize
24KB

Download
memory/2852-25-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2928-0-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download
memory/2928-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2928-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2928-9-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2928-15-0x0000000000500000-0x000000000050E000-memory.dmp

Filesize
56KB

Download