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
MD5

d9260a4b6dbbd14005070ea871f4cfd2
SHA1

456ce2295431e297036bf9f185b6a80d1866f849
SHA256

d010b0b5bff25d4cc9b65d8f24e4ae5b596804d4c60c506e993d312323a881bb
SHA512

43ba2387df4cae14d3b696d9ac23977e32eadd30dff24b862fc9dcc33d9b73bdfba40d6363b8906627454cbc76635720c64b35d7bbeecf27ba71673c62957fbe
SSDEEP

3072:EcuwpCTxFeqTqLtg2l3z1TR9lPl4Bq89CP9qCL3qZnd2+gvcYwl6:tuwpCTxFIljz9lPCBq8jaL

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

Processes:

msiexec.exe

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

Processes:

msiexec.exe

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

Processes:

regsvr32.exe

description pid process target process

PID 1296 set thread context of 5044 1296 regsvr32.exe msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 5044 msiexec.exe
Token: SeSecurityPrivilege 5044 msiexec.exe

description	pid	process	target process
PID 1296 set thread context of 5044	1296	regsvr32.exe	msiexec.exe

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

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

regsvr32.exeregsvr32.exe

description	pid	process	target process
PID 4844 wrote to memory of 1296	4844	regsvr32.exe	regsvr32.exe
PID 4844 wrote to memory of 1296	4844	regsvr32.exe	regsvr32.exe
PID 4844 wrote to memory of 1296	4844	regsvr32.exe	regsvr32.exe
PID 1296 wrote to memory of 5044	1296	regsvr32.exe	msiexec.exe
PID 1296 wrote to memory of 5044	1296	regsvr32.exe	msiexec.exe
PID 1296 wrote to memory of 5044	1296	regsvr32.exe	msiexec.exe
PID 1296 wrote to memory of 5044	1296	regsvr32.exe	msiexec.exe
PID 1296 wrote to memory of 5044	1296	regsvr32.exe	msiexec.exe

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 Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1296-132-0x0000000000000000-mapping.dmp

Download
memory/5044-133-0x0000000000000000-mapping.dmp

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

Filesize
176KB

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

Filesize
176KB

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

Filesize
176KB

Download