xloader | 100738b518fd653a4244f947f6793b69896cb4ef75876588c758e1d521c535c1

General

Target

Po2142021.xlsx
Size

587KB
MD5

76ea81747e2e9370b97e4d47ddfbabdd
SHA1

169fcccd26f30b2bdc6374efe085d5a45812f194
SHA256

100738b518fd653a4244f947f6793b69896cb4ef75876588c758e1d521c535c1
SHA512

5b8eb3eb4c6af0cf3035e7a8af940c0b1239058a4448f937d7494eb8107b6b069f4e14692aa25de21a5b2478b9d9ce0e5771c8d3bc2389a1edce428002caf9d5

Score

10^/10

xloader b6a4 loader rat suricata

Malware Config

Extracted

Family

xloader

Version

2.3

Campaign

b6a4

C2

http://www.helpmovingandstorage.com/b6a4/

Decoy

gr2future.com

asteroid.finance

skoba-plast.com

rnerfrfw5z3ki.net

thesmartroadtoretirement.com

avisdrummondhomes.com

banban365.net

profesyonelkampcadiri.net

royalloanhs.com

yulujy.com

xn--naqejahan-n3b.com

msalee.net

dollyvee.com

albertagamehawkersclub.com

cbspecialists.com

findingforeverrealty.com

mrtireshop.com

wadamasanari.com

growtechinfo.com

qipai039.com

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata: ET MALWARE Terse alphanumeric executable downloader high likelihood of being hostile
suricata

Xloader Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1992-64-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1608-77-0x0000000000090000-0x00000000000B9000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1728 EQNEDT32.EXE
Downloads MZ/PE file
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

1128 vbc.exe
1992 vbc.exe
Loads dropped DLL 3 IoCs

Processes:

EQNEDT32.EXE

pid process

1728 EQNEDT32.EXE
1728 EQNEDT32.EXE
1728 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
6	1728	EQNEDT32.EXE

pid	process
1128	vbc.exe
1992	vbc.exe

pid	process
1728	EQNEDT32.EXE
1728	EQNEDT32.EXE
1728	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exemsiexec.exe

description	pid	process	target process
PID 1128 set thread context of 1992	1128	vbc.exe	vbc.exe
PID 1992 set thread context of 1280	1992	vbc.exe	Explorer.EXE
PID 1608 set thread context of 1280	1608	msiexec.exe	Explorer.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
Launches Equation Editor 1 TTPs 1 IoCs
Equation Editor is an old Office component often targeted by exploits such as CVE-2017-11882.
exploit

Exploitation for Client Execution
T1203

Processes:

EQNEDT32.EXE

pid process

1728 EQNEDT32.EXE

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

pid	process
1728	EQNEDT32.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-1-5-21-1669990088-476967504-438132596-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-1669990088-476967504-438132596-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-1669990088-476967504-438132596-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1669990088-476967504-438132596-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-1669990088-476967504-438132596-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1669990088-476967504-438132596-1000\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-1-5-21-1669990088-476967504-438132596-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-1669990088-476967504-438132596-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-1669990088-476967504-438132596-1000\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

2036 EXCEL.EXE

pid	process
2036	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 29 IoCs

Processes:

vbc.exemsiexec.exe

pid	process
1992	vbc.exe
1992	vbc.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe
1608	msiexec.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1280 Explorer.EXE
Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

vbc.exevbc.exemsiexec.exe

pid process

1128 vbc.exe
1992 vbc.exe
1992 vbc.exe
1992 vbc.exe
1608 msiexec.exe
1608 msiexec.exe

pid	process
1128	vbc.exe
1992	vbc.exe
1992	vbc.exe
1992	vbc.exe
1608	msiexec.exe
1608	msiexec.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

vbc.exeExplorer.EXEmsiexec.exe

description	pid	process
Token: SeDebugPrivilege	1992	vbc.exe
Token: SeShutdownPrivilege	1280	Explorer.EXE
Token: SeShutdownPrivilege	1280	Explorer.EXE
Token: SeDebugPrivilege	1608	msiexec.exe
Token: SeShutdownPrivilege	1280	Explorer.EXE
Token: SeShutdownPrivilege	1280	Explorer.EXE

Suspicious use of FindShellTrayWindow 49 IoCs

Processes:

Explorer.EXE

pid	process
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE

Suspicious use of SendNotifyMessage 49 IoCs

Processes:

Explorer.EXE

pid	process
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE
1280	Explorer.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

2036 EXCEL.EXE
2036 EXCEL.EXE
2036 EXCEL.EXE

pid	process
2036	EXCEL.EXE
2036	EXCEL.EXE
2036	EXCEL.EXE

Suspicious use of WriteProcessMemory 16 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXE

description	pid	process	target process
PID 1728 wrote to memory of 1128	1728	EQNEDT32.EXE	vbc.exe
PID 1728 wrote to memory of 1128	1728	EQNEDT32.EXE	vbc.exe
PID 1728 wrote to memory of 1128	1728	EQNEDT32.EXE	vbc.exe
PID 1728 wrote to memory of 1128	1728	EQNEDT32.EXE	vbc.exe
PID 1128 wrote to memory of 1992	1128	vbc.exe	vbc.exe
PID 1128 wrote to memory of 1992	1128	vbc.exe	vbc.exe
PID 1128 wrote to memory of 1992	1128	vbc.exe	vbc.exe
PID 1128 wrote to memory of 1992	1128	vbc.exe	vbc.exe
PID 1128 wrote to memory of 1992	1128	vbc.exe	vbc.exe
PID 1280 wrote to memory of 1608	1280	Explorer.EXE	msiexec.exe
PID 1280 wrote to memory of 1608	1280	Explorer.EXE	msiexec.exe
PID 1280 wrote to memory of 1608	1280	Explorer.EXE	msiexec.exe
PID 1280 wrote to memory of 1608	1280	Explorer.EXE	msiexec.exe
PID 1280 wrote to memory of 1608	1280	Explorer.EXE	msiexec.exe
PID 1280 wrote to memory of 1608	1280	Explorer.EXE	msiexec.exe
PID 1280 wrote to memory of 1608	1280	Explorer.EXE	msiexec.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1280

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\Po2142021.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2036

C:\Windows\SysWOW64\msiexec.exe
"C:\Windows\SysWOW64\msiexec.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1608

C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE
"C:\Program Files (x86)\Common Files\Microsoft Shared\EQUATION\EQNEDT32.EXE" -Embedding
1⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Launches Equation Editor
- Suspicious use of WriteProcessMemory
PID:1728

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:1128

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1992

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Exploitation for Client Execution

1

T1203

Persistence

Privilege Escalation

Defense Evasion

Scripting

1

T1064

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Public\vbc.exe
MD5
866d1aeb69daac5e6e4dda938edf8d26

SHA1
184f3ae0508d5004a9e3fe981cbc830092d41ed7

SHA256
a41ba93183d03c4cf6b138170fab1d15c306918bb4acd1c2cbc3ee53765e5564

SHA512
e488ee1b612c683c72c9ce7d33727d1f6daa6f1bdb599b9f77fd2cf6f0b7122d650a4347bfb836bf4b5e111c92057ecfb91fd517821c32cf7b1fc246ec8bfcee

Download Submit
C:\Users\Public\vbc.exe
MD5
866d1aeb69daac5e6e4dda938edf8d26

SHA1
184f3ae0508d5004a9e3fe981cbc830092d41ed7

SHA256
a41ba93183d03c4cf6b138170fab1d15c306918bb4acd1c2cbc3ee53765e5564

SHA512
e488ee1b612c683c72c9ce7d33727d1f6daa6f1bdb599b9f77fd2cf6f0b7122d650a4347bfb836bf4b5e111c92057ecfb91fd517821c32cf7b1fc246ec8bfcee

Download Submit
C:\Users\Public\vbc.exe
MD5
866d1aeb69daac5e6e4dda938edf8d26

SHA1
184f3ae0508d5004a9e3fe981cbc830092d41ed7

SHA256
a41ba93183d03c4cf6b138170fab1d15c306918bb4acd1c2cbc3ee53765e5564

SHA512
e488ee1b612c683c72c9ce7d33727d1f6daa6f1bdb599b9f77fd2cf6f0b7122d650a4347bfb836bf4b5e111c92057ecfb91fd517821c32cf7b1fc246ec8bfcee

Download Submit
\Users\Public\vbc.exe
MD5
866d1aeb69daac5e6e4dda938edf8d26

SHA1
184f3ae0508d5004a9e3fe981cbc830092d41ed7

SHA256
a41ba93183d03c4cf6b138170fab1d15c306918bb4acd1c2cbc3ee53765e5564

SHA512
e488ee1b612c683c72c9ce7d33727d1f6daa6f1bdb599b9f77fd2cf6f0b7122d650a4347bfb836bf4b5e111c92057ecfb91fd517821c32cf7b1fc246ec8bfcee

Download Submit
\Users\Public\vbc.exe
MD5
866d1aeb69daac5e6e4dda938edf8d26

SHA1
184f3ae0508d5004a9e3fe981cbc830092d41ed7

SHA256
a41ba93183d03c4cf6b138170fab1d15c306918bb4acd1c2cbc3ee53765e5564

SHA512
e488ee1b612c683c72c9ce7d33727d1f6daa6f1bdb599b9f77fd2cf6f0b7122d650a4347bfb836bf4b5e111c92057ecfb91fd517821c32cf7b1fc246ec8bfcee

Download Submit
\Users\Public\vbc.exe
MD5
866d1aeb69daac5e6e4dda938edf8d26

SHA1
184f3ae0508d5004a9e3fe981cbc830092d41ed7

SHA256
a41ba93183d03c4cf6b138170fab1d15c306918bb4acd1c2cbc3ee53765e5564

SHA512
e488ee1b612c683c72c9ce7d33727d1f6daa6f1bdb599b9f77fd2cf6f0b7122d650a4347bfb836bf4b5e111c92057ecfb91fd517821c32cf7b1fc246ec8bfcee

Download Submit
memory/1128-63-0x0000000000250000-0x0000000000252000-memory.dmp

Filesize
8KB

Download
memory/1128-59-0x0000000000000000-mapping.dmp

Download
memory/1280-67-0x00000000049F0000-0x0000000004B26000-memory.dmp

Filesize
1.2MB

Download
memory/1280-82-0x000007FEF5F80000-0x000007FEF60C3000-memory.dmp

Filesize
1.3MB

Download
memory/1280-80-0x0000000006B60000-0x0000000006C7B000-memory.dmp

Filesize
1.1MB

Download
memory/1280-83-0x000007FF05EB0000-0x000007FF05EBA000-memory.dmp

Filesize
40KB

Download
memory/1608-79-0x0000000000B20000-0x0000000000BAF000-memory.dmp

Filesize
572KB

Download
memory/1608-77-0x0000000000090000-0x00000000000B9000-memory.dmp

Filesize
164KB

Download
memory/1608-78-0x00000000022E0000-0x00000000025E3000-memory.dmp

Filesize
3.0MB

Download
memory/1608-76-0x0000000000BF0000-0x0000000000C04000-memory.dmp

Filesize
80KB

Download
memory/1608-73-0x0000000000000000-mapping.dmp

Download
memory/1728-55-0x0000000075B51000-0x0000000075B53000-memory.dmp

Filesize
8KB

Download
memory/1992-64-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1992-65-0x0000000000890000-0x0000000000B93000-memory.dmp

Filesize
3.0MB

Download
memory/1992-66-0x00000000000F0000-0x0000000000100000-memory.dmp

Filesize
64KB

Download
memory/1992-61-0x000000000041D0B0-mapping.dmp

Download
memory/2036-52-0x000000002F141000-0x000000002F144000-memory.dmp

Filesize
12KB

Download
memory/2036-53-0x0000000070E41000-0x0000000070E43000-memory.dmp

Filesize
8KB

Download
memory/2036-71-0x0000000006120000-0x0000000006D6A000-memory.dmp

Filesize
12.3MB

Download
memory/2036-72-0x0000000006120000-0x0000000006D6A000-memory.dmp

Filesize
12.3MB

Download
memory/2036-70-0x0000000006120000-0x0000000006D6A000-memory.dmp

Filesize
12.3MB

Download
memory/2036-69-0x0000000006120000-0x0000000006D6A000-memory.dmp

Filesize
12.3MB

Download
memory/2036-81-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2036-68-0x0000000006120000-0x0000000006D6A000-memory.dmp

Filesize
12.3MB

Download
memory/2036-54-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads