latrodectus | 3a7b4f31f11884854c6eee060669d518aaba8a6ba311200aef7d775f3e38ea5b

General

Target

3a7b4f31f11884854c6eee060669d518aaba8a6ba311200aef7d775f3e38ea5b.exe
Size

3.4MB
MD5

9499d9ca6a96c11439dc4e116bfae2ec
SHA1

9e536f4faee5e196cce606db2a96a6d352953d99
SHA256

3a7b4f31f11884854c6eee060669d518aaba8a6ba311200aef7d775f3e38ea5b
SHA512

09c34580b34549ce7750ce0862a7f2582e0f75c1492dc2eff5c18b51d87860bc79f285a2e72ffde622df9a4f1c04d4e974fd5e74995d1c6e891eaca2fc8186dc
SSDEEP

49152:102IVhuSr8IKwC6h1lgKlQAEijVvZek0jL2U0DITZOoJdlArtYtPtdJ+c1cTyyFH:2BhpFZsVZPl

Score

10^/10

latrodectus loader

Malware Config

Extracted

Family

latrodectus

Version

1.4

C2

https://formenista.com/test/

https://reidenhetic.com/test/

Attributes

group
Delta
user_agent
Mozilla/4.0 (compatible; MSIE 7.0; Windows NT 5.1; Tob 1.1)

aes.hex

Signatures

Detects Latrodectus 7 IoCs

Detects Latrodectus v1.4.

resource	yara_rule
behavioral1/memory/2900-0-0x0000000000230000-0x0000000000245000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2900-1-0x0000000000230000-0x0000000000245000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2900-2-0x0000000000230000-0x0000000000245000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/2900-8-0x0000000000230000-0x0000000000245000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/3068-12-0x0000000000220000-0x0000000000235000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/3068-10-0x0000000000220000-0x0000000000235000-memory.dmp	family_latrodectus_1_4
behavioral1/memory/3068-9-0x0000000000220000-0x0000000000235000-memory.dmp	family_latrodectus_1_4

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

Deletes itself 1 IoCs

pid	Process
2900	3a7b4f31f11884854c6eee060669d518aaba8a6ba311200aef7d775f3e38ea5b.exe

Executes dropped EXE 2 IoCs

pid	Process
3068	Update_5139a7f3.exe
980	Update_5139a7f3.exe

Loads dropped DLL 6 IoCs

pid	Process
2900	3a7b4f31f11884854c6eee060669d518aaba8a6ba311200aef7d775f3e38ea5b.exe
1676	WerFault.exe
1676	WerFault.exe
1676	WerFault.exe
1676	WerFault.exe
1676	WerFault.exe

Suspicious behavior: RenamesItself 1 IoCs

pid	Process
2900	3a7b4f31f11884854c6eee060669d518aaba8a6ba311200aef7d775f3e38ea5b.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2900 wrote to memory of 3068	2900	3a7b4f31f11884854c6eee060669d518aaba8a6ba311200aef7d775f3e38ea5b.exe	30
PID 2900 wrote to memory of 3068	2900	3a7b4f31f11884854c6eee060669d518aaba8a6ba311200aef7d775f3e38ea5b.exe	30
PID 2900 wrote to memory of 3068	2900	3a7b4f31f11884854c6eee060669d518aaba8a6ba311200aef7d775f3e38ea5b.exe	30
PID 596 wrote to memory of 980	596	taskeng.exe	34
PID 596 wrote to memory of 980	596	taskeng.exe	34
PID 596 wrote to memory of 980	596	taskeng.exe	34
PID 980 wrote to memory of 1676	980	Update_5139a7f3.exe	35
PID 980 wrote to memory of 1676	980	Update_5139a7f3.exe	35
PID 980 wrote to memory of 1676	980	Update_5139a7f3.exe	35

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:\Users\Admin\AppData\Local\Temp\3a7b4f31f11884854c6eee060669d518aaba8a6ba311200aef7d775f3e38ea5b.exe
"C:\Users\Admin\AppData\Local\Temp\3a7b4f31f11884854c6eee060669d518aaba8a6ba311200aef7d775f3e38ea5b.exe"
1⤵
- Deletes itself
- Loads dropped DLL
- Suspicious behavior: RenamesItself
- Suspicious use of WriteProcessMemory
PID:2900
- C:\Users\Admin\AppData\Roaming\Custom_update\Update_5139a7f3.exe
  "C:\Users\Admin\AppData\Roaming\Custom_update\Update_5139a7f3.exe"
  2⤵
  - Executes dropped EXE
  PID:3068

C:\Windows\system32\taskeng.exe
taskeng.exe {D17BA777-B396-44F3-B96D-22760DE5DD3D} S-1-5-21-1488793075-819845221-1497111674-1000:UPNECVIU\Admin:Interactive:[1]
1⤵
- Suspicious use of WriteProcessMemory
PID:596
- C:\Users\Admin\AppData\Roaming\Custom_update\Update_5139a7f3.exe
  C:\Users\Admin\AppData\Roaming\Custom_update\Update_5139a7f3.exe
  2⤵
  - Executes dropped EXE
  - Suspicious use of WriteProcessMemory
  PID:980
- - C:\Windows\system32\WerFault.exe
    C:\Windows\system32\WerFault.exe -u -p 980 -s 208
    3⤵
    - Loads dropped DLL
    PID:1676

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Roaming\Custom_update\Update_5139a7f3.exe

Filesize
3.4MB

MD5
9499d9ca6a96c11439dc4e116bfae2ec

SHA1
9e536f4faee5e196cce606db2a96a6d352953d99

SHA256
3a7b4f31f11884854c6eee060669d518aaba8a6ba311200aef7d775f3e38ea5b

SHA512
09c34580b34549ce7750ce0862a7f2582e0f75c1492dc2eff5c18b51d87860bc79f285a2e72ffde622df9a4f1c04d4e974fd5e74995d1c6e891eaca2fc8186dc

Download Submit
memory/2900-0-0x0000000000230000-0x0000000000245000-memory.dmp

Filesize
84KB

Download
memory/2900-1-0x0000000000230000-0x0000000000245000-memory.dmp

Filesize
84KB

Download
memory/2900-2-0x0000000000230000-0x0000000000245000-memory.dmp

Filesize
84KB

Download
memory/2900-8-0x0000000000230000-0x0000000000245000-memory.dmp

Filesize
84KB

Download
memory/2900-7-0x0000000140000000-0x000000014036C000-memory.dmp

Filesize
3.4MB

Download
memory/3068-12-0x0000000000220000-0x0000000000235000-memory.dmp

Filesize
84KB

Download
memory/3068-10-0x0000000000220000-0x0000000000235000-memory.dmp

Filesize
84KB

Download
memory/3068-9-0x0000000000220000-0x0000000000235000-memory.dmp

Filesize
84KB

Download

Analysis

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