zloader | f97954d9c80dbfee223fb704863c5a156912f450eee2d0510af6301dfd919f09

Resubmissions

31-10-2023 09:03

231031-k1gr6aha76 10

07-07-2021 20:04

210707-p9kx8yftcx 10

Analysis

max time kernel
1657s
max time network
1659s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
31-10-2023 09:03

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General

Target

favicon.dll
Size

646KB
MD5

1d700b208c65ca26efe5fa4be4749569
SHA1

3deeff224b359ca2b28a841a116b84b783206adc
SHA256

f97954d9c80dbfee223fb704863c5a156912f450eee2d0510af6301dfd919f09
SHA512

8c5bcbdf35f4e3ad1177d98b0944b1ec9f407a7bd537af5ecd8e5aad37a67c4c46748bfbe165b4edb6348324e4b97d26a6e1af0007f458c3f697a6757cb05d92
SSDEEP

12288:A1Xiy+UrnWHWzB2nWSgg6Uyan4jN3PMLYHBlIfNGwOF4IurIU+ls:JlUKQgWfg6qkHMOF8IU

Score

10^/10

zloader mk1 mac2 botnet trojan

Malware Config

Extracted

Family

zloader

Botnet

mk1

Campaign

mac2

https://dssdffsdf.drld/mm.php

Attributes

build_id
43

rc4.plain

rsa_pubkey.plain

Signatures

Suspicious use of NtCreateUserProcessOtherParentProcess 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 2624 created 1352 2624 rundll32.exe Explorer.EXE
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 4 IoCs

Processes:

msiexec.exe

flow pid process

9 2668 msiexec.exe
11 2668 msiexec.exe
13 2668 msiexec.exe
16 2668 msiexec.exe
Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 2624 set thread context of 2668 2624 rundll32.exe msiexec.exe
Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

rundll32.exe

pid process

2624 rundll32.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

rundll32.exemsiexec.exe

description pid process

Token: SeDebugPrivilege 2624 rundll32.exe
Token: SeSecurityPrivilege 2668 msiexec.exe
Token: SeSecurityPrivilege 2668 msiexec.exe

description	pid	process	target process
PID 2624 created 1352	2624	rundll32.exe	Explorer.EXE

flow	pid	process
9	2668	msiexec.exe
11	2668	msiexec.exe
13	2668	msiexec.exe
16	2668	msiexec.exe

description	pid	process	target process
PID 2624 set thread context of 2668	2624	rundll32.exe	msiexec.exe

pid	process
2624	rundll32.exe

description	pid	process
Token: SeDebugPrivilege	2624	rundll32.exe
Token: SeSecurityPrivilege	2668	msiexec.exe
Token: SeSecurityPrivilege	2668	msiexec.exe

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 2136 wrote to memory of 2624	2136	rundll32.exe	rundll32.exe
PID 2136 wrote to memory of 2624	2136	rundll32.exe	rundll32.exe
PID 2136 wrote to memory of 2624	2136	rundll32.exe	rundll32.exe
PID 2136 wrote to memory of 2624	2136	rundll32.exe	rundll32.exe
PID 2136 wrote to memory of 2624	2136	rundll32.exe	rundll32.exe
PID 2136 wrote to memory of 2624	2136	rundll32.exe	rundll32.exe
PID 2136 wrote to memory of 2624	2136	rundll32.exe	rundll32.exe
PID 2624 wrote to memory of 2668	2624	rundll32.exe	msiexec.exe
PID 2624 wrote to memory of 2668	2624	rundll32.exe	msiexec.exe
PID 2624 wrote to memory of 2668	2624	rundll32.exe	msiexec.exe
PID 2624 wrote to memory of 2668	2624	rundll32.exe	msiexec.exe
PID 2624 wrote to memory of 2668	2624	rundll32.exe	msiexec.exe
PID 2624 wrote to memory of 2668	2624	rundll32.exe	msiexec.exe
PID 2624 wrote to memory of 2668	2624	rundll32.exe	msiexec.exe
PID 2624 wrote to memory of 2668	2624	rundll32.exe	msiexec.exe
PID 2624 wrote to memory of 2668	2624	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\favicon.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:2136
- C:\Windows\SysWOW64\rundll32.exe
  rundll32.exe C:\Users\Admin\AppData\Local\Temp\favicon.dll,#1
  2⤵
  - Suspicious use of NtCreateUserProcessOtherParentProcess
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2624

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
PID:1352
- C:\Windows\SysWOW64\msiexec.exe
  msiexec.exe
  2⤵
  - Blocklisted process makes network request
  - Suspicious use of AdjustPrivilegeToken
  PID:2668

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\Cab3787.tmp

Filesize
61KB

MD5
f3441b8572aae8801c04f3060b550443

SHA1
4ef0a35436125d6821831ef36c28ffaf196cda15

SHA256
6720349e7d82ee0a8e73920d3c2b7cb2912d9fcf2edb6fd98f2f12820158b0bf

SHA512
5ba01ba421b50030e380ae6bbcd2f681f2a91947fe7fedb3c8e6b5f24dce9517abf57b1cf26cc6078d4bb53bde6fcfb2561591337c841f8f2cb121a3d71661b9

Download Submit
C:\Users\Admin\AppData\Local\Temp\Tar43F8.tmp

Filesize
163KB

MD5
9441737383d21192400eca82fda910ec

SHA1
725e0d606a4fc9ba44aa8ffde65bed15e65367e4

SHA256
bc3a6e84e41faeb57e7c21aa3b60c2a64777107009727c5b7c0ed8fe658909e5

SHA512
7608dd653a66cd364392a78d4711b48d1707768d36996e4d38871c6843b5714e1d7da4b4cc6db969e6000cfa182bcb74216ef6823d1063f036fc5c3413fb8dcf

Download Submit
memory/2624-1-0x0000000074B70000-0x0000000074CAF000-memory.dmp

Filesize
1.2MB

Download
memory/2624-0-0x0000000074B70000-0x0000000074CAF000-memory.dmp

Filesize
1.2MB

Download
memory/2624-2-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2624-3-0x0000000074B70000-0x0000000074CAF000-memory.dmp

Filesize
1.2MB

Download
memory/2624-13-0x0000000074B70000-0x0000000074CAF000-memory.dmp

Filesize
1.2MB

Download
memory/2668-10-0x0000000000090000-0x00000000000BD000-memory.dmp

Filesize
180KB

Download
memory/2668-11-0x00000000000C0000-0x00000000000C1000-memory.dmp

Filesize
4KB

Download
memory/2668-12-0x0000000000090000-0x00000000000BD000-memory.dmp

Filesize
180KB

Download
memory/2668-15-0x0000000000090000-0x00000000000BD000-memory.dmp

Filesize
180KB

Download
memory/2668-16-0x0000000000090000-0x00000000000BD000-memory.dmp

Filesize
180KB

Download