xloader | 99ce15e2fc458d02db44d648a4b88bfff0043131b392475ad314a1f3dd72245f

General

Target

03052021.xlsx
Size

2.7MB
MD5

7d4798dccbd61d8cebb3f9541139276a
SHA1

40a3a4635f797e1436414700a3f6611aa9d7abd4
SHA256

99ce15e2fc458d02db44d648a4b88bfff0043131b392475ad314a1f3dd72245f
SHA512

0cfa1b86d4ba2f5c42778a097b145440cc35a124bf68796d882100cd89ea5b3500e95be3be3678d8b8cca1087731d8dd8f7beae339e3cf379e94c9812250277a

Score

10^/10

xloader loader rat

Malware Config

Extracted

Family

xloader

C2

http://www.rizrvd.com/bw82/

Decoy

fundamentaliemef.com

gallerybrows.com

leadeligey.com

octoberx2.online

climaxnovels.com

gdsjgf.com

curateherstories.com

blacksailus.com

yjpps.com

gmobilet.com

fcoins.club

foreverlive2027.com

healthyfifties.com

wmarquezy.com

housebulb.com

thebabyfriendly.com

primajayaintiperkasa.com

learnplaychess.com

chrisbubser.digital

xn--avenr-wsa.com

Signatures

Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/676-21-0x000000000041CFF0-mapping.dmp	xloader
behavioral1/memory/676-20-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/1100-30-0x0000000000080000-0x00000000000A8000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1788 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

436 vbc.exe
676 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1788 EQNEDT32.EXE
1788 EQNEDT32.EXE
1788 EQNEDT32.EXE
1788 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
6	1788	EQNEDT32.EXE

pid	process
436	vbc.exe
676	vbc.exe

pid	process
1788	EQNEDT32.EXE
1788	EQNEDT32.EXE
1788	EQNEDT32.EXE
1788	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exeNAPSTAT.EXE

description	pid	process	target process
PID 436 set thread context of 676	436	vbc.exe	vbc.exe
PID 676 set thread context of 1276	676	vbc.exe	Explorer.EXE
PID 1100 set thread context of 1276	1100	NAPSTAT.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

1788 EQNEDT32.EXE

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

pid	process
1788	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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote	EXCEL.EXE
Set value (int)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\Contexts = "1"	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\EXCEL.EXE/3000"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Set value (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\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-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\MenuExt\E&xport to Microsoft Excel	EXCEL.EXE

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1924 EXCEL.EXE
Suspicious behavior: EnumeratesProcesses 9 IoCs

Processes:

vbc.exeNAPSTAT.EXE

pid process

676 vbc.exe
676 vbc.exe
1100 NAPSTAT.EXE
1100 NAPSTAT.EXE
1100 NAPSTAT.EXE
1100 NAPSTAT.EXE
1100 NAPSTAT.EXE
1100 NAPSTAT.EXE
1100 NAPSTAT.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exeNAPSTAT.EXE

pid process

676 vbc.exe
676 vbc.exe
676 vbc.exe
1100 NAPSTAT.EXE
1100 NAPSTAT.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exeNAPSTAT.EXE

description pid process

Token: SeDebugPrivilege 676 vbc.exe
Token: SeDebugPrivilege 1100 NAPSTAT.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1924 EXCEL.EXE
1924 EXCEL.EXE
1924 EXCEL.EXE

pid	process
1924	EXCEL.EXE

pid	process
676	vbc.exe
676	vbc.exe
1100	NAPSTAT.EXE
1100	NAPSTAT.EXE
1100	NAPSTAT.EXE
1100	NAPSTAT.EXE
1100	NAPSTAT.EXE
1100	NAPSTAT.EXE
1100	NAPSTAT.EXE

pid	process
676	vbc.exe
676	vbc.exe
676	vbc.exe
1100	NAPSTAT.EXE
1100	NAPSTAT.EXE

description	pid	process
Token: SeDebugPrivilege	676	vbc.exe
Token: SeDebugPrivilege	1100	NAPSTAT.EXE

pid	process
1924	EXCEL.EXE
1924	EXCEL.EXE
1924	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXENAPSTAT.EXE

description	pid	process	target process
PID 1788 wrote to memory of 436	1788	EQNEDT32.EXE	vbc.exe
PID 1788 wrote to memory of 436	1788	EQNEDT32.EXE	vbc.exe
PID 1788 wrote to memory of 436	1788	EQNEDT32.EXE	vbc.exe
PID 1788 wrote to memory of 436	1788	EQNEDT32.EXE	vbc.exe
PID 436 wrote to memory of 676	436	vbc.exe	vbc.exe
PID 436 wrote to memory of 676	436	vbc.exe	vbc.exe
PID 436 wrote to memory of 676	436	vbc.exe	vbc.exe
PID 436 wrote to memory of 676	436	vbc.exe	vbc.exe
PID 436 wrote to memory of 676	436	vbc.exe	vbc.exe
PID 436 wrote to memory of 676	436	vbc.exe	vbc.exe
PID 436 wrote to memory of 676	436	vbc.exe	vbc.exe
PID 1276 wrote to memory of 1100	1276	Explorer.EXE	NAPSTAT.EXE
PID 1276 wrote to memory of 1100	1276	Explorer.EXE	NAPSTAT.EXE
PID 1276 wrote to memory of 1100	1276	Explorer.EXE	NAPSTAT.EXE
PID 1276 wrote to memory of 1100	1276	Explorer.EXE	NAPSTAT.EXE
PID 1100 wrote to memory of 552	1100	NAPSTAT.EXE	cmd.exe
PID 1100 wrote to memory of 552	1100	NAPSTAT.EXE	cmd.exe
PID 1100 wrote to memory of 552	1100	NAPSTAT.EXE	cmd.exe
PID 1100 wrote to memory of 552	1100	NAPSTAT.EXE	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1276

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\03052021.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1924

C:\Windows\SysWOW64\NAPSTAT.EXE
"C:\Windows\SysWOW64\NAPSTAT.EXE"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1100

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:552

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:1788

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:436

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:676

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

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Downloads

C:\Users\Public\vbc.exe
MD5
1c7a241966323185ddea3b121d08b14a

SHA1
2d9a41bfbad3416321e1913e92f8ee8c8d4e8c7e

SHA256
9f5ee7d9915ac3e6f684c7e22555357b5c43c6ca6cbaca8a974b667b51a3ba51

SHA512
f7278a13422e24881ebf4444de998ebc91fdadf068d0350e2f139e3eeaf905de961d83b2ffd8a0e560cb04f4da55faa07be3b96b2ee4b0a29b1bcd5e0fc5aeb5

Download Submit
C:\Users\Public\vbc.exe
MD5
1c7a241966323185ddea3b121d08b14a

SHA1
2d9a41bfbad3416321e1913e92f8ee8c8d4e8c7e

SHA256
9f5ee7d9915ac3e6f684c7e22555357b5c43c6ca6cbaca8a974b667b51a3ba51

SHA512
f7278a13422e24881ebf4444de998ebc91fdadf068d0350e2f139e3eeaf905de961d83b2ffd8a0e560cb04f4da55faa07be3b96b2ee4b0a29b1bcd5e0fc5aeb5

Download Submit
C:\Users\Public\vbc.exe
MD5
1c7a241966323185ddea3b121d08b14a

SHA1
2d9a41bfbad3416321e1913e92f8ee8c8d4e8c7e

SHA256
9f5ee7d9915ac3e6f684c7e22555357b5c43c6ca6cbaca8a974b667b51a3ba51

SHA512
f7278a13422e24881ebf4444de998ebc91fdadf068d0350e2f139e3eeaf905de961d83b2ffd8a0e560cb04f4da55faa07be3b96b2ee4b0a29b1bcd5e0fc5aeb5

Download Submit
\Users\Public\vbc.exe
MD5
1c7a241966323185ddea3b121d08b14a

SHA1
2d9a41bfbad3416321e1913e92f8ee8c8d4e8c7e

SHA256
9f5ee7d9915ac3e6f684c7e22555357b5c43c6ca6cbaca8a974b667b51a3ba51

SHA512
f7278a13422e24881ebf4444de998ebc91fdadf068d0350e2f139e3eeaf905de961d83b2ffd8a0e560cb04f4da55faa07be3b96b2ee4b0a29b1bcd5e0fc5aeb5

Download Submit
\Users\Public\vbc.exe
MD5
1c7a241966323185ddea3b121d08b14a

SHA1
2d9a41bfbad3416321e1913e92f8ee8c8d4e8c7e

SHA256
9f5ee7d9915ac3e6f684c7e22555357b5c43c6ca6cbaca8a974b667b51a3ba51

SHA512
f7278a13422e24881ebf4444de998ebc91fdadf068d0350e2f139e3eeaf905de961d83b2ffd8a0e560cb04f4da55faa07be3b96b2ee4b0a29b1bcd5e0fc5aeb5

Download Submit
\Users\Public\vbc.exe
MD5
1c7a241966323185ddea3b121d08b14a

SHA1
2d9a41bfbad3416321e1913e92f8ee8c8d4e8c7e

SHA256
9f5ee7d9915ac3e6f684c7e22555357b5c43c6ca6cbaca8a974b667b51a3ba51

SHA512
f7278a13422e24881ebf4444de998ebc91fdadf068d0350e2f139e3eeaf905de961d83b2ffd8a0e560cb04f4da55faa07be3b96b2ee4b0a29b1bcd5e0fc5aeb5

Download Submit
\Users\Public\vbc.exe
MD5
1c7a241966323185ddea3b121d08b14a

SHA1
2d9a41bfbad3416321e1913e92f8ee8c8d4e8c7e

SHA256
9f5ee7d9915ac3e6f684c7e22555357b5c43c6ca6cbaca8a974b667b51a3ba51

SHA512
f7278a13422e24881ebf4444de998ebc91fdadf068d0350e2f139e3eeaf905de961d83b2ffd8a0e560cb04f4da55faa07be3b96b2ee4b0a29b1bcd5e0fc5aeb5

Download Submit
memory/436-17-0x00000000005D0000-0x00000000005D7000-memory.dmp

Filesize
28KB

Download
memory/436-18-0x0000000004B80000-0x0000000004B81000-memory.dmp

Filesize
4KB

Download
memory/436-11-0x0000000000000000-mapping.dmp

Download
memory/436-19-0x0000000002210000-0x000000000225F000-memory.dmp

Filesize
316KB

Download
memory/436-14-0x000000006C810000-0x000000006CEFE000-memory.dmp

Filesize
6.9MB

Download
memory/436-15-0x0000000000030000-0x0000000000031000-memory.dmp

Filesize
4KB

Download
memory/552-28-0x0000000000000000-mapping.dmp

Download
memory/676-20-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/676-21-0x000000000041CFF0-mapping.dmp

Download
memory/676-24-0x0000000000A80000-0x0000000000D83000-memory.dmp

Filesize
3.0MB

Download
memory/676-25-0x0000000000210000-0x0000000000220000-memory.dmp

Filesize
64KB

Download
memory/1100-29-0x0000000000800000-0x0000000000846000-memory.dmp

Filesize
280KB

Download
memory/1100-33-0x0000000002280000-0x000000000230F000-memory.dmp

Filesize
572KB

Download
memory/1100-31-0x0000000001F70000-0x0000000002273000-memory.dmp

Filesize
3.0MB

Download
memory/1100-30-0x0000000000080000-0x00000000000A8000-memory.dmp

Filesize
160KB

Download
memory/1100-27-0x0000000000000000-mapping.dmp

Download
memory/1276-26-0x0000000003E60000-0x0000000003FC5000-memory.dmp

Filesize
1.4MB

Download
memory/1664-6-0x000007FEF79D0000-0x000007FEF7C4A000-memory.dmp

Filesize
2.5MB

Download
memory/1788-5-0x0000000075AE1000-0x0000000075AE3000-memory.dmp

Filesize
8KB

Download
memory/1924-2-0x000000002F9D1000-0x000000002F9D4000-memory.dmp

Filesize
12KB

Download
memory/1924-3-0x0000000071821000-0x0000000071823000-memory.dmp

Filesize
8KB

Download
memory/1924-4-0x000000005FFF0000-0x0000000060000000-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