zloader | d010b0b5bff25d4cc9b65d8f24e4ae5b596804d4c60c506e993d312323a881bb

Analysis

max time kernel
496s
max time network
500s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
27/10/2022, 06:35

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General

Target
0d533321292f6854d7f9705a738d58ee5941c93b52674681083ec5c21a987ab1_unpacked.dll
Size 156KB
Sample221027-hchy7sbcd4
SHA256 d010b0b5bff25d4cc9b65d8f24e4ae5b596804d4c60c506e993d312323a881bb
MD5 d9260a4b6dbbd14005070ea871f4cfd2
SHA1 456ce2295431e297036bf9f185b6a80d1866f849
SHA512 43ba2387df4cae14d3b696d9ac23977e32eadd30dff24b862fc9dcc33d9b73bdfba40d6363b8906627454cbc76635720c64b35d7bbeecf27ba71673c62957fbe
SSDEEP 3072:EcuwpCTxFeqTqLtg2l3z1TR9lPl4Bq89CP9qCL3qZnd2+gvcYwl6:tuwpCTxFIljz9lPCBq8jaL
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

Blocklisted process makes network request 10 IoCs

flow	pid	Process
32	5044	msiexec.exe
34	5044	msiexec.exe
36	5044	msiexec.exe
37	5044	msiexec.exe
38	5044	msiexec.exe
45	5044	msiexec.exe
46	5044	msiexec.exe
48	5044	msiexec.exe
49	5044	msiexec.exe
50	5044	msiexec.exe

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-1-5-21-929662420-1054238289-2961194603-1000\Software\Microsoft\Windows\CurrentVersion\Run	msiexec.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\Budiah = "rundll32.exe C:\\Users\\Admin\\AppData\\Roaming\\Behu\\yhbyfo.dll,DllRegisterServer"	msiexec.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 1296 set thread context of 5044	1296	regsvr32.exe	92

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeSecurityPrivilege	5044	msiexec.exe
Token: SeSecurityPrivilege	5044	msiexec.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 4844 wrote to memory of 1296	4844	regsvr32.exe	83
PID 4844 wrote to memory of 1296	4844	regsvr32.exe	83
PID 4844 wrote to memory of 1296	4844	regsvr32.exe	83
PID 1296 wrote to memory of 5044	1296	regsvr32.exe	92
PID 1296 wrote to memory of 5044	1296	regsvr32.exe	92
PID 1296 wrote to memory of 5044	1296	regsvr32.exe	92
PID 1296 wrote to memory of 5044	1296	regsvr32.exe	92
PID 1296 wrote to memory of 5044	1296	regsvr32.exe	92

C:\Windows\system32\regsvr32.exe
regsvr32 /s C:\Users\Admin\AppData\Local\Temp\0d533321292f6854d7f9705a738d58ee5941c93b52674681083ec5c21a987ab1_unpacked.dll
1⤵
- Suspicious use of WriteProcessMemory
PID:4844
- C:\Windows\SysWOW64\regsvr32.exe
  /s C:\Users\Admin\AppData\Local\Temp\0d533321292f6854d7f9705a738d58ee5941c93b52674681083ec5c21a987ab1_unpacked.dll
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1296
- - C:\Windows\SysWOW64\msiexec.exe
    msiexec.exe
    3⤵
    - Blocklisted process makes network request
    - Adds Run key to start application
    - Suspicious use of AdjustPrivilegeToken
    PID:5044

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/5044-134-0x00000000005C0000-0x00000000005EC000-memory.dmp

Download

memory/5044-135-0x00000000005C0000-0x00000000005EC000-memory.dmp

Download

memory/5044-136-0x00000000005C0000-0x00000000005EC000-memory.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads