zloader | 3787d90c7fa9f7b2803b904476eff287d4f59d1fe550f248250e84ca8885065f

General

Target

cYg4dkuO.dll
Size

688KB
MD5

1da1b1f1037bacd1fe8e017a5d52e727
SHA1

b9b6463219a19632299c5e0fb76715753b6ddd0e
SHA256

3787d90c7fa9f7b2803b904476eff287d4f59d1fe550f248250e84ca8885065f
SHA512

9ff5622658a9d5c1f679a4783d2f4a4b340838fc24fbcc5e1856d74ce7e9d5b90280b5cd1b96e7be40c87406d7e0c0d2c2e6a51b786b6c29d069b23f0287a5f4

Score

10^/10

zloader nut 24/03 botnet trojan

Malware Config

Extracted

Family

zloader

Botnet

nut

Campaign

24/03

C2

https://electrabeautytools.com/post.php

https://elexitodelonatural.com/post.php

https://elmaaref.com/post.php

https://enrichuae.com/post.php

https://www.epsilon-me.com/post.php

https://codilmeosoterti.tk/post.php

rc4.plain

rsa_pubkey.plain

Signatures

Zloader, Terdot, DELoader, ZeusSphinx
Zloader is a malware strain that was initially discovered back in August 2015.
trojan botnet zloader

Blocklisted process makes network request 50 IoCs

Processes:

msiexec.exe

flow	pid	process
6	872	msiexec.exe
7	872	msiexec.exe
8	872	msiexec.exe
9	872	msiexec.exe
10	872	msiexec.exe
11	872	msiexec.exe
12	872	msiexec.exe
13	872	msiexec.exe
14	872	msiexec.exe
15	872	msiexec.exe
16	872	msiexec.exe
17	872	msiexec.exe
18	872	msiexec.exe
19	872	msiexec.exe
20	872	msiexec.exe
21	872	msiexec.exe
22	872	msiexec.exe
23	872	msiexec.exe
24	872	msiexec.exe
25	872	msiexec.exe
26	872	msiexec.exe
28	872	msiexec.exe
29	872	msiexec.exe
30	872	msiexec.exe
32	872	msiexec.exe
33	872	msiexec.exe
34	872	msiexec.exe
35	872	msiexec.exe
36	872	msiexec.exe
37	872	msiexec.exe
38	872	msiexec.exe
39	872	msiexec.exe
40	872	msiexec.exe
41	872	msiexec.exe
42	872	msiexec.exe
43	872	msiexec.exe
44	872	msiexec.exe
45	872	msiexec.exe
46	872	msiexec.exe
47	872	msiexec.exe
48	872	msiexec.exe
49	872	msiexec.exe
50	872	msiexec.exe
51	872	msiexec.exe
53	872	msiexec.exe
54	872	msiexec.exe
55	872	msiexec.exe
56	872	msiexec.exe
58	872	msiexec.exe
59	872	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1948 set thread context of 872 1948 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 872 msiexec.exe
Token: SeSecurityPrivilege 872 msiexec.exe

description	pid	process	target process
PID 1948 set thread context of 872	1948	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	872	msiexec.exe
Token: SeSecurityPrivilege	872	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 1576 wrote to memory of 1948	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 1948	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 1948	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 1948	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 1948	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 1948	1576	rundll32.exe	rundll32.exe
PID 1576 wrote to memory of 1948	1576	rundll32.exe	rundll32.exe
PID 1948 wrote to memory of 872	1948	rundll32.exe	msiexec.exe
PID 1948 wrote to memory of 872	1948	rundll32.exe	msiexec.exe
PID 1948 wrote to memory of 872	1948	rundll32.exe	msiexec.exe
PID 1948 wrote to memory of 872	1948	rundll32.exe	msiexec.exe
PID 1948 wrote to memory of 872	1948	rundll32.exe	msiexec.exe
PID 1948 wrote to memory of 872	1948	rundll32.exe	msiexec.exe
PID 1948 wrote to memory of 872	1948	rundll32.exe	msiexec.exe
PID 1948 wrote to memory of 872	1948	rundll32.exe	msiexec.exe
PID 1948 wrote to memory of 872	1948	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\cYg4dkuO.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:1576
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\cYg4dkuO.dll,#1
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1948
- - C:\Windows\SysWOW64\msiexec.exe
    msiexec.exe
    3⤵
    - Blocklisted process makes network request
    - Suspicious use of AdjustPrivilegeToken
    PID:872

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/400-9-0x000007FEF6780000-0x000007FEF69FA000-memory.dmp

Filesize
2.5MB

Download
memory/872-6-0x0000000000000000-mapping.dmp

Download
memory/872-8-0x00000000000F0000-0x000000000011B000-memory.dmp

Filesize
172KB

Download
memory/1948-3-0x0000000075A41000-0x0000000075A43000-memory.dmp

Filesize
8KB

Download
memory/1948-2-0x0000000000000000-mapping.dmp

Download
memory/1948-4-0x0000000000280000-0x00000000002AB000-memory.dmp

Filesize
172KB

Download
memory/1948-5-0x00000000000B0000-0x00000000000B1000-memory.dmp

Filesize
4KB

Download

Analysis

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