zloader | 280fedf6fd7e0964222ac9b21bcc289c222c7ea91d7bad6350741bdf8c1f0938 | Triage

Resubmissions

05-03-2021 05:53

210305-jqn2paptcs 10

24-06-2020 14:54

200624-4a9fpsftlx 10

Analysis

max time kernel
147s
max time network
149s
platform
windows10_x64
resource
win10v20201028
submitted
05-03-2021 05:53

Sharing

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General

Target

rVuj5bF.bin.dll
Size

403KB
MD5

4e9d3907d80cfe903df735b855d5eaeb
SHA1

3fcc74d0b646e8324f0a4cf4708890a8261f3e84
SHA256

280fedf6fd7e0964222ac9b21bcc289c222c7ea91d7bad6350741bdf8c1f0938
SHA512

672b8b0dd776ff156504e55c171fe035e5aac7b1b48ae785973113648717317eb611acbcc6141c5ab6c0096c4f41c24c335d957afbca1fddcf15dfde9750361f

Score

10^/10

zloader botnet trojan

Malware Config

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 15 IoCs

Processes:

msiexec.exe

flow	pid	process
18	3728	msiexec.exe
19	3728	msiexec.exe
20	3728	msiexec.exe
21	3728	msiexec.exe
22	3728	msiexec.exe
23	3728	msiexec.exe
25	3728	msiexec.exe
26	3728	msiexec.exe
27	3728	msiexec.exe
28	3728	msiexec.exe
29	3728	msiexec.exe
30	3728	msiexec.exe
38	3728	msiexec.exe
40	3728	msiexec.exe
41	3728	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 3944 set thread context of 3728 3944 rundll32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 3728 msiexec.exe
Token: SeSecurityPrivilege 3728 msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

rundll32.exerundll32.exe

description	pid	process	target process
PID 3976 wrote to memory of 3944	3976	rundll32.exe	rundll32.exe
PID 3976 wrote to memory of 3944	3976	rundll32.exe	rundll32.exe
PID 3976 wrote to memory of 3944	3976	rundll32.exe	rundll32.exe
PID 3944 wrote to memory of 3728	3944	rundll32.exe	msiexec.exe
PID 3944 wrote to memory of 3728	3944	rundll32.exe	msiexec.exe
PID 3944 wrote to memory of 3728	3944	rundll32.exe	msiexec.exe
PID 3944 wrote to memory of 3728	3944	rundll32.exe	msiexec.exe
PID 3944 wrote to memory of 3728	3944	rundll32.exe	msiexec.exe

C:\Windows\system32\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\rVuj5bF.bin.dll,#1
1⤵
- Suspicious use of WriteProcessMemory
PID:3976

C:\Windows\SysWOW64\rundll32.exe
rundll32.exe C:\Users\Admin\AppData\Local\Temp\rVuj5bF.bin.dll,#1
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3944

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Blocklisted process makes network request
- Suspicious use of AdjustPrivilegeToken
PID:3728

Network

MITRE ATT&CK Matrix

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Downloads

memory/3728-5-0x0000000000000000-mapping.dmp

Download
memory/3728-6-0x0000000002C80000-0x0000000002CAB000-memory.dmp

Filesize
172KB

Download
memory/3944-2-0x0000000000000000-mapping.dmp

Download
memory/3944-3-0x0000000072B10000-0x0000000072B3B000-memory.dmp

Filesize
172KB

Download
memory/3944-4-0x00000000007A0000-0x00000000007A1000-memory.dmp

Filesize
4KB

Download