zloader | 92b61c6ea3254a25ffe182a1fbf53b4e4dc154bfb955c213a4c554b41d1c43a6

General

Target

d8U.txt.dll
Size

298KB
MD5

e32b5a1b18f205db4298a9f18f52457a
SHA1

b29e3ea3d4b32e2d21b1f01f2f571d59676506bf
SHA256

92b61c6ea3254a25ffe182a1fbf53b4e4dc154bfb955c213a4c554b41d1c43a6
SHA512

e6693bee35ea4aa7089bc589a6161560c03eb1a988d90a6ce07ec294fd8c5a8c9a08a3c853b17f1b3043f3ada602a90269761295b1c8e9f907dc32ece03de210

Score

10^/10

zloader nut 22/03 botnet trojan

Malware Config

Extracted

Family

zloader

Botnet

nut

Campaign

22/03

C2

https://svilapp.svgipsar.org/post.php

https://nadar-gis.com/post.php

https://crearqarquitectos.com/post.php

https://crown-sign.com/post.php

https://dainikjahan.com/post.php

https://denatureedutech.com/post.php

https://alekllemtilaro.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 64 IoCs

Processes:

msiexec.exe

flow	pid	process
7	268	msiexec.exe
8	268	msiexec.exe
9	268	msiexec.exe
10	268	msiexec.exe
11	268	msiexec.exe
12	268	msiexec.exe
13	268	msiexec.exe
14	268	msiexec.exe
15	268	msiexec.exe
16	268	msiexec.exe
17	268	msiexec.exe
18	268	msiexec.exe
19	268	msiexec.exe
20	268	msiexec.exe
21	268	msiexec.exe
22	268	msiexec.exe
23	268	msiexec.exe
24	268	msiexec.exe
25	268	msiexec.exe
26	268	msiexec.exe
27	268	msiexec.exe
29	268	msiexec.exe
30	268	msiexec.exe
31	268	msiexec.exe
33	268	msiexec.exe
35	268	msiexec.exe
37	268	msiexec.exe
39	268	msiexec.exe
41	268	msiexec.exe
43	268	msiexec.exe
45	268	msiexec.exe
46	268	msiexec.exe
47	268	msiexec.exe
48	268	msiexec.exe
49	268	msiexec.exe
50	268	msiexec.exe
51	268	msiexec.exe
52	268	msiexec.exe
53	268	msiexec.exe
54	268	msiexec.exe
55	268	msiexec.exe
56	268	msiexec.exe
57	268	msiexec.exe
58	268	msiexec.exe
59	268	msiexec.exe
60	268	msiexec.exe
61	268	msiexec.exe
62	268	msiexec.exe
63	268	msiexec.exe
64	268	msiexec.exe
65	268	msiexec.exe
66	268	msiexec.exe
67	268	msiexec.exe
68	268	msiexec.exe
69	268	msiexec.exe
70	268	msiexec.exe
71	268	msiexec.exe
72	268	msiexec.exe
73	268	msiexec.exe
74	268	msiexec.exe
75	268	msiexec.exe
76	268	msiexec.exe
77	268	msiexec.exe
78	268	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 1800 set thread context of 268 1800 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 268 msiexec.exe
Token: SeSecurityPrivilege 268 msiexec.exe

description	pid	process	target process
PID 1800 set thread context of 268	1800	rundll32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	268	msiexec.exe
Token: SeSecurityPrivilege	268	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 844 wrote to memory of 1800	844	rundll32.exe	rundll32.exe
PID 844 wrote to memory of 1800	844	rundll32.exe	rundll32.exe
PID 844 wrote to memory of 1800	844	rundll32.exe	rundll32.exe
PID 844 wrote to memory of 1800	844	rundll32.exe	rundll32.exe
PID 844 wrote to memory of 1800	844	rundll32.exe	rundll32.exe
PID 844 wrote to memory of 1800	844	rundll32.exe	rundll32.exe
PID 844 wrote to memory of 1800	844	rundll32.exe	rundll32.exe
PID 1800 wrote to memory of 268	1800	rundll32.exe	msiexec.exe
PID 1800 wrote to memory of 268	1800	rundll32.exe	msiexec.exe
PID 1800 wrote to memory of 268	1800	rundll32.exe	msiexec.exe
PID 1800 wrote to memory of 268	1800	rundll32.exe	msiexec.exe
PID 1800 wrote to memory of 268	1800	rundll32.exe	msiexec.exe
PID 1800 wrote to memory of 268	1800	rundll32.exe	msiexec.exe
PID 1800 wrote to memory of 268	1800	rundll32.exe	msiexec.exe
PID 1800 wrote to memory of 268	1800	rundll32.exe	msiexec.exe
PID 1800 wrote to memory of 268	1800	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d8U.txt.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:844

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\d8U.txt.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1800

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Blocklisted process makes network request
- Suspicious use of AdjustPrivilegeToken
PID:268

Network

MITRE ATT&CK Matrix

Replay Monitor

Loading Replay Monitor...

Downloads

memory/268-6-0x0000000000000000-mapping.dmp

Download
memory/268-8-0x0000000000090000-0x00000000000BB000-memory.dmp

Filesize
172KB

Download
memory/1656-9-0x000007FEF81B0000-0x000007FEF842A000-memory.dmp

Filesize
2.5MB

Download
memory/1800-2-0x0000000000000000-mapping.dmp

Download
memory/1800-3-0x00000000761E1000-0x00000000761E3000-memory.dmp

Filesize
8KB

Download
memory/1800-4-0x0000000074930000-0x000000007495B000-memory.dmp

Filesize
172KB

Download
memory/1800-5-0x0000000000140000-0x0000000000141000-memory.dmp

Filesize
4KB

Download

Analysis

Sharing