latrodectus | bbbce5905921a018ce25f9bcbd4674410ec6a554cfea33a18e7cf8a4e520450f

Analysis

max time kernel
1199s
max time network
1200s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
14-08-2024 00:48

Sharing

Copy URL

Twitter E-mail

Report Analysis Logs

General

Target

UPDATE-HSYEYDBB.html.lnk
Size

1KB
MD5

ae64124a57d7f5de780f85b7456d90a2
SHA1

ab9a153c0da841ed0cbdd70664a48ba0959eb8a9
SHA256

119f0a88b3366805f6a592742b7ced190010eb98c81f32e251bd42d968b68471
SHA512

0e9ad80748d97e55708bf4939bbe0179d558d643679065c101fa52f861e4d4527cc7bd86795388892f5fd466d2ac959e11f0b89f3c84c673a86d3a62e35ae910

Score

10^/10

latrodectus discovery loader

Malware Config

Extracted

Family

latrodectus

https://mazdakrichest.com/live/

https://riverhasus.com/live/

Signatures

Latrodectus loader
Latrodectus is a loader written in C++.
loader latrodectus

Detect larodectus Loader variant 1 3 IoCs

loader

resource	yara_rule
behavioral1/memory/3228-1-0x00000187B2190000-0x00000187B21A3000-memory.dmp	family_latrodectus_v1
behavioral1/memory/3224-11-0x000001CDA1E50000-0x000001CDA1E63000-memory.dmp	family_latrodectus_v1
behavioral1/memory/3224-16-0x000001CDA1E50000-0x000001CDA1E63000-memory.dmp	family_latrodectus_v1

Blocklisted process makes network request 64 IoCs

flow	pid	Process
69	3224	rundll32.exe
70	3224	rundll32.exe
72	3224	rundll32.exe
74	3224	rundll32.exe
75	3224	rundll32.exe
76	3224	rundll32.exe
77	3224	rundll32.exe
78	3224	rundll32.exe
79	3224	rundll32.exe
80	3224	rundll32.exe
81	3224	rundll32.exe
82	3224	rundll32.exe
83	3224	rundll32.exe
84	3224	rundll32.exe
85	3224	rundll32.exe
86	3224	rundll32.exe
87	3224	rundll32.exe
88	3224	rundll32.exe
89	3224	rundll32.exe
90	3224	rundll32.exe
91	3224	rundll32.exe
92	3224	rundll32.exe
93	3224	rundll32.exe
94	3224	rundll32.exe
95	3224	rundll32.exe
96	3224	rundll32.exe
97	3224	rundll32.exe
98	3224	rundll32.exe
99	3224	rundll32.exe
100	3224	rundll32.exe
101	3224	rundll32.exe
102	3224	rundll32.exe
103	3224	rundll32.exe
104	3224	rundll32.exe
105	3224	rundll32.exe
106	3224	rundll32.exe
107	3224	rundll32.exe
108	3224	rundll32.exe
109	3224	rundll32.exe
110	3224	rundll32.exe
111	3224	rundll32.exe
112	3224	rundll32.exe
113	3224	rundll32.exe
114	3224	rundll32.exe
115	3224	rundll32.exe
116	3224	rundll32.exe
117	3224	rundll32.exe
118	3224	rundll32.exe
119	3224	rundll32.exe
120	3224	rundll32.exe
121	3224	rundll32.exe
122	3224	rundll32.exe
123	3224	rundll32.exe
124	3224	rundll32.exe
125	3224	rundll32.exe
126	3224	rundll32.exe
127	3224	rundll32.exe
128	3224	rundll32.exe
129	3224	rundll32.exe
130	3224	rundll32.exe
131	3224	rundll32.exe
132	3224	rundll32.exe
133	3224	rundll32.exe
134	3224	rundll32.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1302416131-1437503476-2806442725-1000\Control Panel\International\Geo\Nation	cmd.exe

Loads dropped DLL 1 IoCs

pid	Process
3224	rundll32.exe

Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
discovery

Network Service Discovery
T1046
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

Suspicious behavior: EnumeratesProcesses 8 IoCs

pid	Process
3228	rundll32.exe
3228	rundll32.exe
3228	rundll32.exe
3228	rundll32.exe
3224	rundll32.exe
3224	rundll32.exe
3224	rundll32.exe
3224	rundll32.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 4980 wrote to memory of 3228	4980	cmd.exe	87
PID 4980 wrote to memory of 3228	4980	cmd.exe	87
PID 3228 wrote to memory of 3224	3228	rundll32.exe	89
PID 3228 wrote to memory of 3224	3228	rundll32.exe	89

Uses Task Scheduler COM API 1 TTPs
The Task Scheduler COM API can be used to schedule applications to run on boot or at set times.
persistence

Query Registry
T1012

C:\Windows\system32\cmd.exe
cmd /c C:\Users\Admin\AppData\Local\Temp\UPDATE-HSYEYDBB.html.lnk
1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4980
- C:\Windows\system32\rundll32.exe
  "C:\Windows\system32\rundll32.exe" version1.dll, scab
  2⤵
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  PID:3228
- - C:\Windows\system32\rundll32.exe
    rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_7c5d6f1.dll", scab
    3⤵
    - Blocklisted process makes network request
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    PID:3224

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Network Service Discovery

T1046

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Roaming\Custom_update\Update_7c5d6f1.dll

Filesize
1.4MB

MD5
f834dfc1861cd6361f34496c3bbafe66

SHA1
a983e82d009901310c8a3255c4b4e3a02d556fa7

SHA256
e99f3517a36a9f7a55335699cfb4d84d08b042d47146119156f7f3bab580b4d7

SHA512
088a6170c948ddb2c2b0cf2431ae61688201ef5bc3f1af217a58bf18b26dd9e0ab7ee082f822e736d0467f62e33bf71b806127eb998bed8e739c1e441ac05e00

Download Submit
memory/3224-11-0x000001CDA1E50000-0x000001CDA1E63000-memory.dmp

Filesize
76KB

Download
memory/3224-16-0x000001CDA1E50000-0x000001CDA1E63000-memory.dmp

Filesize
76KB

Download
memory/3228-0-0x00000187B2080000-0x00000187B2084000-memory.dmp

Filesize
16KB

Download
memory/3228-1-0x00000187B2190000-0x00000187B21A3000-memory.dmp

Filesize
76KB

Download
memory/3228-9-0x0000000180000000-0x000000018016F000-memory.dmp

Filesize
1.4MB

Download