zloader | 77184f1532fef0b593262fdd95ff1f2d2637fe08be003304d4e44f358c67b2d1

General

Target

ISLeRPs.dll
Size

744KB
MD5

34379df22c95ed0f82ccb5f91f8a7069
SHA1

5bf00c67f45de592866b2fc91963dc83057390f4
SHA256

77184f1532fef0b593262fdd95ff1f2d2637fe08be003304d4e44f358c67b2d1
SHA512

bd446f119df944c9c7ea0603e3b05f893d030b337163cd527c00c0f601ea24ceabdc77f26103e9002daac0597d6e390b8ebf3296bc904f469d243f235c4cd35e

Score

10^/10

zloader nut 11/03 botnet trojan

Malware Config

Extracted

Family

zloader

Botnet

nut

Campaign

11/03

C2

https://benjaminecomstore.com/post.php

https://hactivehealth.com/post.php

https://kediae.com/post.php

https://lawrencesstore.com/post.php

https://mylbecommerce.com/post.php

https://modernessentails.com/post.php

https://loanjarube.com/post.php

https://mylolabrands.com/post.php

https://riamanlisibuslae.ga/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
6	1356	msiexec.exe
7	1356	msiexec.exe
8	1356	msiexec.exe
9	1356	msiexec.exe
10	1356	msiexec.exe
11	1356	msiexec.exe
12	1356	msiexec.exe
13	1356	msiexec.exe
14	1356	msiexec.exe
15	1356	msiexec.exe
16	1356	msiexec.exe
17	1356	msiexec.exe
18	1356	msiexec.exe
19	1356	msiexec.exe
20	1356	msiexec.exe
21	1356	msiexec.exe
22	1356	msiexec.exe
23	1356	msiexec.exe
24	1356	msiexec.exe
25	1356	msiexec.exe
26	1356	msiexec.exe
28	1356	msiexec.exe
29	1356	msiexec.exe
30	1356	msiexec.exe
32	1356	msiexec.exe
33	1356	msiexec.exe
34	1356	msiexec.exe
35	1356	msiexec.exe
36	1356	msiexec.exe
37	1356	msiexec.exe
38	1356	msiexec.exe
39	1356	msiexec.exe
40	1356	msiexec.exe
41	1356	msiexec.exe
42	1356	msiexec.exe
43	1356	msiexec.exe
44	1356	msiexec.exe
45	1356	msiexec.exe
46	1356	msiexec.exe
47	1356	msiexec.exe
48	1356	msiexec.exe
49	1356	msiexec.exe
50	1356	msiexec.exe
51	1356	msiexec.exe
52	1356	msiexec.exe
54	1356	msiexec.exe
55	1356	msiexec.exe
56	1356	msiexec.exe
58	1356	msiexec.exe
59	1356	msiexec.exe
60	1356	msiexec.exe
61	1356	msiexec.exe
62	1356	msiexec.exe
63	1356	msiexec.exe
64	1356	msiexec.exe
65	1356	msiexec.exe
66	1356	msiexec.exe
67	1356	msiexec.exe
68	1356	msiexec.exe
69	1356	msiexec.exe
70	1356	msiexec.exe
71	1356	msiexec.exe
72	1356	msiexec.exe
73	1356	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

regsvr32.exe

description pid process target process

PID 1920 set thread context of 1356 1920 regsvr32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 1356 msiexec.exe
Token: SeSecurityPrivilege 1356 msiexec.exe

description	pid	process	target process
PID 1920 set thread context of 1356	1920	regsvr32.exe	msiexec.exe

description	pid	process
Token: SeSecurityPrivilege	1356	msiexec.exe
Token: SeSecurityPrivilege	1356	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

regsvr32.exeregsvr32.exe

description	pid	process	target process
PID 1724 wrote to memory of 1920	1724	regsvr32.exe	regsvr32.exe
PID 1724 wrote to memory of 1920	1724	regsvr32.exe	regsvr32.exe
PID 1724 wrote to memory of 1920	1724	regsvr32.exe	regsvr32.exe
PID 1724 wrote to memory of 1920	1724	regsvr32.exe	regsvr32.exe
PID 1724 wrote to memory of 1920	1724	regsvr32.exe	regsvr32.exe
PID 1724 wrote to memory of 1920	1724	regsvr32.exe	regsvr32.exe
PID 1724 wrote to memory of 1920	1724	regsvr32.exe	regsvr32.exe
PID 1920 wrote to memory of 1356	1920	regsvr32.exe	msiexec.exe
PID 1920 wrote to memory of 1356	1920	regsvr32.exe	msiexec.exe
PID 1920 wrote to memory of 1356	1920	regsvr32.exe	msiexec.exe
PID 1920 wrote to memory of 1356	1920	regsvr32.exe	msiexec.exe
PID 1920 wrote to memory of 1356	1920	regsvr32.exe	msiexec.exe
PID 1920 wrote to memory of 1356	1920	regsvr32.exe	msiexec.exe
PID 1920 wrote to memory of 1356	1920	regsvr32.exe	msiexec.exe
PID 1920 wrote to memory of 1356	1920	regsvr32.exe	msiexec.exe
PID 1920 wrote to memory of 1356	1920	regsvr32.exe	msiexec.exe

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\ISLeRPs.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:1724

C:\Windows\SysWOW64\regsvr32.exe
/s C:\Users\Admin\AppData\Local\Temp\ISLeRPs.dll
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1920

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Blocklisted process makes network request
- Suspicious use of AdjustPrivilegeToken
PID:1356

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/1356-7-0x0000000000000000-mapping.dmp

Download
memory/1356-9-0x00000000000D0000-0x00000000000F9000-memory.dmp

Filesize
164KB

Download
memory/1644-10-0x000007FEF7D90000-0x000007FEF800A000-memory.dmp

Filesize
2.5MB

Download
memory/1724-2-0x000007FEFC601000-0x000007FEFC603000-memory.dmp

Filesize
8KB

Download
memory/1920-3-0x0000000000000000-mapping.dmp

Download
memory/1920-4-0x00000000761E1000-0x00000000761E3000-memory.dmp

Filesize
8KB

Download
memory/1920-5-0x0000000074E90000-0x0000000074EB9000-memory.dmp

Filesize
164KB

Download
memory/1920-6-0x0000000000370000-0x0000000000371000-memory.dmp

Filesize
4KB

Download

Analysis

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