d8893a23cf0ebb0ed5e313dbfe30a152505222d2720d1725dce87b5e8bedc9bf

Analysis

max time kernel
148s
max time network
149s
platform
windows7_x64
resource
win7-20240215-en
resource tags

arch:x64arch:x86image:win7-20240215-enlocale:en-usos:windows7-x64system
submitted
24/04/2024, 00:44

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General

Target

2024-04-24_6516d3a62ec4ee6d0f539e651376f34d_cryptolocker.exe
Size

47KB
MD5

6516d3a62ec4ee6d0f539e651376f34d
SHA1

abbacf0607d58f878de024e24a3e735362305a3a
SHA256

d8893a23cf0ebb0ed5e313dbfe30a152505222d2720d1725dce87b5e8bedc9bf
SHA512

923ab29aa15d191e59eb0f74e0678a98202ef3f120dfa4be10d80275ae49b9a3a6aefc941bae904119aab00a8eda0105ea0ac8f2cd4e4609f9e6eff6c991c928
SSDEEP

768:qmOKYQDf5XdrDmjr5tOOtEvwDpjAajFEitQbDmoSQCVUBJUkQqAHBIG05W2Mo2p6:qmbhXDmjr5MOtEvwDpj5cDtKkQZQb

Score

9^/10

Malware Config

Signatures

Detection of CryptoLocker Variants 6 IoCs

resource	yara_rule
behavioral1/memory/2592-0-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/files/0x00090000000122be-11.dat	CryptoLocker_rule2
behavioral1/memory/2592-13-0x0000000000650000-0x0000000000660000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2592-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2956-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2
behavioral1/memory/2956-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_rule2

Detection of Cryptolocker Samples 3 IoCs

resource	yara_rule
behavioral1/memory/2592-16-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2956-17-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1
behavioral1/memory/2956-27-0x0000000000500000-0x0000000000510000-memory.dmp	CryptoLocker_set1

UPX dump on OEP (original entry point) 6 IoCs

resource	yara_rule
behavioral1/memory/2592-0-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/files/0x00090000000122be-11.dat	UPX
behavioral1/memory/2592-13-0x0000000000650000-0x0000000000660000-memory.dmp	UPX
behavioral1/memory/2592-16-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2956-17-0x0000000000500000-0x0000000000510000-memory.dmp	UPX
behavioral1/memory/2956-27-0x0000000000500000-0x0000000000510000-memory.dmp	UPX

Executes dropped EXE 1 IoCs

pid	Process
2956	asih.exe

Loads dropped DLL 1 IoCs

pid	Process
2592	2024-04-24_6516d3a62ec4ee6d0f539e651376f34d_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 2592 wrote to memory of 2956	2592	2024-04-24_6516d3a62ec4ee6d0f539e651376f34d_cryptolocker.exe	28
PID 2592 wrote to memory of 2956	2592	2024-04-24_6516d3a62ec4ee6d0f539e651376f34d_cryptolocker.exe	28
PID 2592 wrote to memory of 2956	2592	2024-04-24_6516d3a62ec4ee6d0f539e651376f34d_cryptolocker.exe	28
PID 2592 wrote to memory of 2956	2592	2024-04-24_6516d3a62ec4ee6d0f539e651376f34d_cryptolocker.exe	28

C:\Users\Admin\AppData\Local\Temp\2024-04-24_6516d3a62ec4ee6d0f539e651376f34d_cryptolocker.exe
"C:\Users\Admin\AppData\Local\Temp\2024-04-24_6516d3a62ec4ee6d0f539e651376f34d_cryptolocker.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2592
- C:\Users\Admin\AppData\Local\Temp\asih.exe
  "C:\Users\Admin\AppData\Local\Temp\asih.exe"
  2⤵
  - Executes dropped EXE
  PID:2956

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\asih.exe

Filesize
48KB

MD5
840b125c665b0ce2d7f909c297d91aac

SHA1
350fa62e53c184e93cdf3b0e494932153677e067

SHA256
fdc28a150078a5ac043ae25490eb7a590b29d6a64638962838378fbbb3622b83

SHA512
05a176f099db1fe1285f6346f776da24a55aeffff7b2b4b07f997466a017b060f51fc5a834268d755bf2b8beecffa591d03db276e71d61b3d10080feae0cee88

Download Submit
memory/2592-0-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2592-1-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2592-3-0x0000000000420000-0x0000000000426000-memory.dmp

Filesize
24KB

Download
memory/2592-2-0x0000000000460000-0x0000000000466000-memory.dmp

Filesize
24KB

Download
memory/2592-13-0x0000000000650000-0x0000000000660000-memory.dmp

Filesize
64KB

Download
memory/2592-16-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2956-17-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download
memory/2956-19-0x00000000002C0000-0x00000000002C6000-memory.dmp

Filesize
24KB

Download
memory/2956-26-0x0000000000240000-0x0000000000246000-memory.dmp

Filesize
24KB

Download
memory/2956-27-0x0000000000500000-0x0000000000510000-memory.dmp

Filesize
64KB

Download