zloader | 31ea3370ca06a2af45514a59a0ae49dc62ac34bc4dce44402f169a9d6fb93853

General

Target

case (4335).xls
Size

153KB
MD5

bf86559630b855e4bf2c54d641147b24
SHA1

182cbac1bdd020fa5fee6ed9d6a50d1071fbe320
SHA256

31ea3370ca06a2af45514a59a0ae49dc62ac34bc4dce44402f169a9d6fb93853
SHA512

f188cdd1ae628850d5a48f32ec17d399fdbed68ed6a6e92977374dac61a0d3286f0a2c1ff83ae4b70af219c9f3d7b49aa4ac5125f63f7f75fc6b70a17a4ddc83

Score

10^/10

zloader kev 26/01 botnet ransomware trojan

Malware Config

Extracted

Language

xlm4.0

Source

URLs

xlm40.dropper

https://rnollg.com/kev/scfrd.dll

Extracted

Family

zloader

Botnet

kev

Campaign

26/01

C2

https://gadgetswolf.com/post.php

https://homesoapmolds.com/post.php

https://govemedico.tk/post.php

rc4.plain

rsa_pubkey.plain

Signatures

Process spawned unexpected child process 1 IoCs

This typically indicates the parent process was compromised via an exploit or macro.

Processes:

rundll32.exe

description	pid	pid_target	process	target process
Parent C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE is not expected to spawn this process	364	1824	rundll32.exe	EXCEL.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

11 588 msiexec.exe
13 588 msiexec.exe
15 588 msiexec.exe
16 588 msiexec.exe
Loads dropped DLL 4 IoCs

Processes:

rundll32.exe

pid process

364 rundll32.exe
364 rundll32.exe
364 rundll32.exe
364 rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
ransomware

System Information Discovery
T1082
Suspicious use of SetThreadContext 1 IoCs

Processes:

rundll32.exe

description pid process target process

PID 364 set thread context of 588 364 rundll32.exe msiexec.exe
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

EXCEL.EXE

description ioc process

Key opened \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor EXCEL.EXE

flow	pid	process
11	588	msiexec.exe
13	588	msiexec.exe
15	588	msiexec.exe
16	588	msiexec.exe

pid	process
364	rundll32.exe
364	rundll32.exe
364	rundll32.exe
364	rundll32.exe

description	pid	process	target process
PID 364 set thread context of 588	364	rundll32.exe	msiexec.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1824 EXCEL.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

msiexec.exe

description pid process

Token: SeSecurityPrivilege 588 msiexec.exe
Token: SeSecurityPrivilege 588 msiexec.exe
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1824 EXCEL.EXE
1824 EXCEL.EXE
1824 EXCEL.EXE

pid	process
1824	EXCEL.EXE

description	pid	process
Token: SeSecurityPrivilege	588	msiexec.exe
Token: SeSecurityPrivilege	588	msiexec.exe

pid	process
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

EXCEL.EXErundll32.exe

description	pid	process	target process
PID 1824 wrote to memory of 364	1824	EXCEL.EXE	rundll32.exe
PID 1824 wrote to memory of 364	1824	EXCEL.EXE	rundll32.exe
PID 1824 wrote to memory of 364	1824	EXCEL.EXE	rundll32.exe
PID 1824 wrote to memory of 364	1824	EXCEL.EXE	rundll32.exe
PID 1824 wrote to memory of 364	1824	EXCEL.EXE	rundll32.exe
PID 1824 wrote to memory of 364	1824	EXCEL.EXE	rundll32.exe
PID 1824 wrote to memory of 364	1824	EXCEL.EXE	rundll32.exe
PID 364 wrote to memory of 588	364	rundll32.exe	msiexec.exe
PID 364 wrote to memory of 588	364	rundll32.exe	msiexec.exe
PID 364 wrote to memory of 588	364	rundll32.exe	msiexec.exe
PID 364 wrote to memory of 588	364	rundll32.exe	msiexec.exe
PID 364 wrote to memory of 588	364	rundll32.exe	msiexec.exe
PID 364 wrote to memory of 588	364	rundll32.exe	msiexec.exe
PID 364 wrote to memory of 588	364	rundll32.exe	msiexec.exe
PID 364 wrote to memory of 588	364	rundll32.exe	msiexec.exe
PID 364 wrote to memory of 588	364	rundll32.exe	msiexec.exe

C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde "C:\Users\Admin\AppData\Local\Temp\case (4335).xls"
1⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1824

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\System32\rundll32.exe" C:\ProgramData\formnet.dll,DllRegisterServer
2⤵
- Process spawned unexpected child process
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:364

C:\Windows\SysWOW64\msiexec.exe
msiexec.exe
3⤵
- Blocklisted process makes network request
- Suspicious use of AdjustPrivilegeToken
PID:588

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\ProgramData\formnet.dll
MD5
b0f3fa047f6ae39a145fd364f693638e

SHA1
1951696d8aca4a31614bb68f9da392402785e14e

SHA256
0bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890

SHA512
86e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98

Download Submit
\ProgramData\formnet.dll
MD5
b0f3fa047f6ae39a145fd364f693638e

SHA1
1951696d8aca4a31614bb68f9da392402785e14e

SHA256
0bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890

SHA512
86e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98

Download Submit
\ProgramData\formnet.dll
MD5
b0f3fa047f6ae39a145fd364f693638e

SHA1
1951696d8aca4a31614bb68f9da392402785e14e

SHA256
0bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890

SHA512
86e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98

Download Submit
\ProgramData\formnet.dll
MD5
b0f3fa047f6ae39a145fd364f693638e

SHA1
1951696d8aca4a31614bb68f9da392402785e14e

SHA256
0bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890

SHA512
86e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98

Download Submit
\ProgramData\formnet.dll
MD5
b0f3fa047f6ae39a145fd364f693638e

SHA1
1951696d8aca4a31614bb68f9da392402785e14e

SHA256
0bf22b8f9aaef21afe71fcbbea62325e7582dad410b0a537f38a9eb8e6855890

SHA512
86e4516705380617a9f48b2e1cd7d9e676439398b802eb6047cd478d4b10bf8f4ba20e019f337b01761fa247cd631ccab22851f078089c2e1c61574bca9f5b98

Download Submit
memory/364-7-0x00000000760F1000-0x00000000760F3000-memory.dmp

Filesize
8KB

Download
memory/364-6-0x0000000000000000-mapping.dmp

Download
memory/364-13-0x00000000006A0000-0x00000000006C6000-memory.dmp

Filesize
152KB

Download
memory/364-14-0x0000000000100000-0x0000000000101000-memory.dmp

Filesize
4KB

Download
memory/588-15-0x0000000000000000-mapping.dmp

Download
memory/588-17-0x00000000000D0000-0x00000000000F6000-memory.dmp

Filesize
152KB

Download
memory/1696-5-0x000007FEF7FE0000-0x000007FEF825A000-memory.dmp

Filesize
2.5MB

Download
memory/1824-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1824-2-0x000000002F561000-0x000000002F564000-memory.dmp

Filesize
12KB

Download
memory/1824-3-0x00000000719D1000-0x00000000719D3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads