zloader | 384f3719ba4fbcf355cc206e27f3bfca94e7bf14dd928de62ab5f74de90df34a

Analysis

max time kernel
490s
max time network
492s
platform
windows10-2004_x64
resource
win10v2004-20220812-en
resource tags

arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system
submitted
27/10/2022, 06:35

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General

Target
f1bdd2bcbaf40bb99224fa293edc1581fd124da63c035657918877901d79bed8_unpacked.dll
Size 144KB
Sample221027-hcnvfsbce6
SHA256 384f3719ba4fbcf355cc206e27f3bfca94e7bf14dd928de62ab5f74de90df34a
MD5 eb8439d5ee379f19d25c2445d28e135a
SHA1 5426510acb07efc464c47bbe0cc413489365a3d9
SHA512 5bbda761ff6c0286d346dd0fda5df2abeeb6ffb81149d0537db969feb682658dc1e5a75bb1d09a13398b26fee4163ace7d35bbd69196628b3daef53c0efdc982
SSDEEP 3072:c2kHDNNqo9hPNER+/2p1Ludye/w4FeNqEKJ7exog/Dt5eFSbvth90:cZHRNNbuc2HLxrgL7exx5ecv
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

zloader botnet persistence trojan

Malware Config

Extracted

Family

zloader

Attributes

build_id
49

Signatures

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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Bucyyb = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Dyfue\\aggaydb.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1164 set thread context of 5004	1164	regsvr32.exe	90

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeSecurityPrivilege	5004	msiexec.exe
Token: SeSecurityPrivilege	5004	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2860 wrote to memory of 1164	2860	regsvr32.exe	82
PID 2860 wrote to memory of 1164	2860	regsvr32.exe	82
PID 2860 wrote to memory of 1164	2860	regsvr32.exe	82
PID 1164 wrote to memory of 5004	1164	regsvr32.exe	90
PID 1164 wrote to memory of 5004	1164	regsvr32.exe	90
PID 1164 wrote to memory of 5004	1164	regsvr32.exe	90
PID 1164 wrote to memory of 5004	1164	regsvr32.exe	90
PID 1164 wrote to memory of 5004	1164	regsvr32.exe	90

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\f1bdd2bcbaf40bb99224fa293edc1581fd124da63c035657918877901d79bed8_unpacked.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:2860
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\f1bdd2bcbaf40bb99224fa293edc1581fd124da63c035657918877901d79bed8_unpacked.dll
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1164
- - C:\Windows\SysWOW64\msiexec.exe
    msiexec.exe
    3⤵
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    PID:5004

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/5004-134-0x0000000000670000-0x0000000000699000-memory.dmp

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memory/5004-135-0x0000000000670000-0x0000000000699000-memory.dmp

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memory/5004-136-0x0000000000670000-0x0000000000699000-memory.dmp

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Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads