latrodectus | eaf0ece0a09bb590077f6e5a7115c38b11d7a8e93e5b2a7608724cd66dc327b5

Analysis

max time kernel
1194s
max time network
1198s
platform
windows10-2004_x64
resource
win10v2004-20240802-en
resource tags

arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system
submitted
26/09/2024, 03:25

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General

Target

UpdaterTag.dll
Size

75KB
MD5

08071c1626889186043493cd17007d1b
SHA1

845f7494136882095f391075b0b0113d86380792
SHA256

eaf0ece0a09bb590077f6e5a7115c38b11d7a8e93e5b2a7608724cd66dc327b5
SHA512

80049aff6af3c6ef4f77017141381c01d15d5e00dcb62d0c3d10251798cbe73fb119b6996d7bddee526a75b06615d58281731581023e5ac42a982e1b9b5d54e4
SSDEEP

1536:KzhEJO+9X+cc8TAGRO73fhRPf82jhuplU:KzhEt9HTAGyk2Yp

Score

10^/10

latrodectus loader

Malware Config

Signatures

Detects Latrodectus 2 IoCs

Detects Latrodectus v1.4.

resource	yara_rule
behavioral1/files/0x00090000000234b0-1.dat	family_latrodectus_1_4
behavioral1/memory/4624-2-0x00007FFD78F10000-0x00007FFD78F26000-memory.dmp	family_latrodectus_1_4

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

Blocklisted process makes network request 5 IoCs

flow	pid	Process
61	4184	rundll32.exe
64	4184	rundll32.exe
65	4184	rundll32.exe
66	4184	rundll32.exe
67	4184	rundll32.exe

Deletes itself 1 IoCs

pid	Process
4624	rundll32.exe

Loads dropped DLL 3 IoCs

pid	Process
4184	rundll32.exe
2024	rundll32.exe
3696	rundll32.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
4624	rundll32.exe

Suspicious use of WriteProcessMemory 2 IoCs

description	pid	Process	procid_target
PID 4624 wrote to memory of 4184	4624	rundll32.exe	82
PID 4624 wrote to memory of 4184	4624	rundll32.exe	82

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\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\UpdaterTag.dll,#1
1⤵
- Deletes itself
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:4624
- C:\Windows\system32\rundll32.exe
  rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_2bc585e8.dll", #1
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  PID:4184

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_2bc585e8.dll", #1
1⤵
- Loads dropped DLL
PID:2024

C:\Windows\system32\rundll32.exe
rundll32.exe "C:\Users\Admin\AppData\Roaming\Custom_update\Update_2bc585e8.dll", #1
1⤵
- Loads dropped DLL
PID:3696

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Roaming\Custom_update\Update_2bc585e8.dll

Filesize
75KB

MD5
08071c1626889186043493cd17007d1b

SHA1
845f7494136882095f391075b0b0113d86380792

SHA256
eaf0ece0a09bb590077f6e5a7115c38b11d7a8e93e5b2a7608724cd66dc327b5

SHA512
80049aff6af3c6ef4f77017141381c01d15d5e00dcb62d0c3d10251798cbe73fb119b6996d7bddee526a75b06615d58281731581023e5ac42a982e1b9b5d54e4

Download Submit
memory/4624-2-0x00007FFD78F10000-0x00007FFD78F26000-memory.dmp

Filesize
88KB

Download