formbook | 0ac1a7ed74f413e6d39a5235038f3c2dea7956f455f37aac5e2a5770cf364690

General

Target

Order_385647584.xlsx
Size

1.5MB
MD5

d040c427703e2a2183f67742c2a5af54
SHA1

e88e65daa49e1dac16bd0b727943758c47057284
SHA256

0ac1a7ed74f413e6d39a5235038f3c2dea7956f455f37aac5e2a5770cf364690
SHA512

62432ed70b468c3044a635fd10e62bd2925e2967c487a7c3d067fcca065cffc43d7770ffe5b652740b7ee244f440e8934ee5f93b07cd263dc8150adce0b55b4f

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.herbmedia.net/csv8/

Decoy

slgacha.com

oohdough.com

6983ylc.com

aykassociate.com

latin-hotspot.com

starrockindia.com

beamsubway.com

queensboutique1000.com

madbaddie.com

bhoomimart.com

ankitparivar.com

aldanasanchezmx.com

citest1597669833.com

cristianofreitas.com

myplantus.com

counterfeitmilk.com

8xf39.com

pregnantwomens.com

yyyut6.com

stnanguo.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader

Xloader Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1484-17-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1484-18-0x000000000041D0C0-mapping.dmp	xloader
behavioral1/memory/440-20-0x0000000000000000-mapping.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1996 EQNEDT32.EXE
Executes dropped EXE 1 IoCs

Processes:

vbc.exe

pid process

1072 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1996 EQNEDT32.EXE
1996 EQNEDT32.EXE
1996 EQNEDT32.EXE
1996 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
7	1996	EQNEDT32.EXE

pid	process
1996	EQNEDT32.EXE
1996	EQNEDT32.EXE
1996	EQNEDT32.EXE
1996	EQNEDT32.EXE

Suspicious use of SetThreadContext 4 IoCs

Processes:

vbc.exevbc.exewscript.exe

description	pid	process	target process
PID 1072 set thread context of 1484	1072	vbc.exe	vbc.exe
PID 1484 set thread context of 1268	1484	vbc.exe	Explorer.EXE
PID 1484 set thread context of 1268	1484	vbc.exe	Explorer.EXE
PID 440 set thread context of 1268	440	wscript.exe	Explorer.EXE

Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

852 schtasks.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

1996 EQNEDT32.EXE

pid	process
852	schtasks.exe

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

pid	process
1996	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

Processes:

EXCEL.EXE

description	ioc	process
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
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
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar	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 (int)	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\Se&nd to OneNote\Contexts = "55"	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1656 EXCEL.EXE

pid	process
1656	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

vbc.exevbc.exewscript.exe

pid	process
1072	vbc.exe
1072	vbc.exe
1072	vbc.exe
1484	vbc.exe
1484	vbc.exe
1484	vbc.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe
440	wscript.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

vbc.exewscript.exe

pid process

1484 vbc.exe
1484 vbc.exe
1484 vbc.exe
1484 vbc.exe
440 wscript.exe
440 wscript.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

vbc.exevbc.exewscript.exe

description pid process

Token: SeDebugPrivilege 1072 vbc.exe
Token: SeDebugPrivilege 1484 vbc.exe
Token: SeDebugPrivilege 440 wscript.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1656 EXCEL.EXE
1656 EXCEL.EXE
1656 EXCEL.EXE

pid	process
1484	vbc.exe
1484	vbc.exe
1484	vbc.exe
1484	vbc.exe
440	wscript.exe
440	wscript.exe

description	pid	process
Token: SeDebugPrivilege	1072	vbc.exe
Token: SeDebugPrivilege	1484	vbc.exe
Token: SeDebugPrivilege	440	wscript.exe

pid	process
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1656	EXCEL.EXE
1656	EXCEL.EXE
1656	EXCEL.EXE

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEwscript.exe

description	pid	process	target process
PID 1996 wrote to memory of 1072	1996	EQNEDT32.EXE	vbc.exe
PID 1996 wrote to memory of 1072	1996	EQNEDT32.EXE	vbc.exe
PID 1996 wrote to memory of 1072	1996	EQNEDT32.EXE	vbc.exe
PID 1996 wrote to memory of 1072	1996	EQNEDT32.EXE	vbc.exe
PID 1072 wrote to memory of 852	1072	vbc.exe	schtasks.exe
PID 1072 wrote to memory of 852	1072	vbc.exe	schtasks.exe
PID 1072 wrote to memory of 852	1072	vbc.exe	schtasks.exe
PID 1072 wrote to memory of 852	1072	vbc.exe	schtasks.exe
PID 1072 wrote to memory of 1612	1072	vbc.exe	vbc.exe
PID 1072 wrote to memory of 1612	1072	vbc.exe	vbc.exe
PID 1072 wrote to memory of 1612	1072	vbc.exe	vbc.exe
PID 1072 wrote to memory of 1612	1072	vbc.exe	vbc.exe
PID 1072 wrote to memory of 1484	1072	vbc.exe	vbc.exe
PID 1072 wrote to memory of 1484	1072	vbc.exe	vbc.exe
PID 1072 wrote to memory of 1484	1072	vbc.exe	vbc.exe
PID 1072 wrote to memory of 1484	1072	vbc.exe	vbc.exe
PID 1072 wrote to memory of 1484	1072	vbc.exe	vbc.exe
PID 1072 wrote to memory of 1484	1072	vbc.exe	vbc.exe
PID 1072 wrote to memory of 1484	1072	vbc.exe	vbc.exe
PID 1268 wrote to memory of 440	1268	Explorer.EXE	wscript.exe
PID 1268 wrote to memory of 440	1268	Explorer.EXE	wscript.exe
PID 1268 wrote to memory of 440	1268	Explorer.EXE	wscript.exe
PID 1268 wrote to memory of 440	1268	Explorer.EXE	wscript.exe
PID 440 wrote to memory of 1992	440	wscript.exe	cmd.exe
PID 440 wrote to memory of 1992	440	wscript.exe	cmd.exe
PID 440 wrote to memory of 1992	440	wscript.exe	cmd.exe
PID 440 wrote to memory of 1992	440	wscript.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1268

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\Order_385647584.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1656

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\SysWOW64\wscript.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:440

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe"
3⤵
PID:1992

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:1996

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1072

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\emozgtRJhjspJ" /XML "C:\Users\Admin\AppData\Local\Temp\tmp2368.tmp"
3⤵
- Creates scheduled task(s)
PID:852

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
3⤵
PID:1612

C:\Windows\Microsoft.NET\Framework\v4.0.30319\vbc.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1484

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

1

T1064

Scheduled Task

1

T1053

Exploitation for Client Execution

1

T1203

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

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\Admin\AppData\Local\Temp\tmp2368.tmp
MD5
bfda9b42afcbae510d0f9abc49ece8ed

SHA1
a1f6ecfc1781869b2c27665fc464f70c3af9ec28

SHA256
09d6fa3d80372e2b42cf842d864e3d335be8fae04044537f3242624e3a44904a

SHA512
e5178c1cfbd2b4f66b7bba168c29dfc8ad75f988db86ffbecd25e09c233ff63dc5e1db624e9a9750c3ebd197f01aa682665d9af2807225f47226cfd2fd77e319

Download Submit
C:\Users\Public\vbc.exe
MD5
4aac66abd3deb77faf44d3fb5884f0a6

SHA1
a5b550d6b41ad1cd9287d2892a65ac856de1bebf

SHA256
4abfdb9315d534afdc9907bcf369d15a121e02d40dc772dece65de6ee2ade651

SHA512
3be81a77ffadb309689738dec4e6f235eff195492e21451d373113e531b3f516b9db2b43857577fd9257a6014934124e26bd84a80683fe3eca6666b69fe398f1

Download Submit
C:\Users\Public\vbc.exe
MD5
4aac66abd3deb77faf44d3fb5884f0a6

SHA1
a5b550d6b41ad1cd9287d2892a65ac856de1bebf

SHA256
4abfdb9315d534afdc9907bcf369d15a121e02d40dc772dece65de6ee2ade651

SHA512
3be81a77ffadb309689738dec4e6f235eff195492e21451d373113e531b3f516b9db2b43857577fd9257a6014934124e26bd84a80683fe3eca6666b69fe398f1

Download Submit
\Users\Public\vbc.exe
MD5
4aac66abd3deb77faf44d3fb5884f0a6

SHA1
a5b550d6b41ad1cd9287d2892a65ac856de1bebf

SHA256
4abfdb9315d534afdc9907bcf369d15a121e02d40dc772dece65de6ee2ade651

SHA512
3be81a77ffadb309689738dec4e6f235eff195492e21451d373113e531b3f516b9db2b43857577fd9257a6014934124e26bd84a80683fe3eca6666b69fe398f1

Download Submit
\Users\Public\vbc.exe
MD5
4aac66abd3deb77faf44d3fb5884f0a6

SHA1
a5b550d6b41ad1cd9287d2892a65ac856de1bebf

SHA256
4abfdb9315d534afdc9907bcf369d15a121e02d40dc772dece65de6ee2ade651

SHA512
3be81a77ffadb309689738dec4e6f235eff195492e21451d373113e531b3f516b9db2b43857577fd9257a6014934124e26bd84a80683fe3eca6666b69fe398f1

Download Submit
\Users\Public\vbc.exe
MD5
4aac66abd3deb77faf44d3fb5884f0a6

SHA1
a5b550d6b41ad1cd9287d2892a65ac856de1bebf

SHA256
4abfdb9315d534afdc9907bcf369d15a121e02d40dc772dece65de6ee2ade651

SHA512
3be81a77ffadb309689738dec4e6f235eff195492e21451d373113e531b3f516b9db2b43857577fd9257a6014934124e26bd84a80683fe3eca6666b69fe398f1

Download Submit
\Users\Public\vbc.exe
MD5
4aac66abd3deb77faf44d3fb5884f0a6

SHA1
a5b550d6b41ad1cd9287d2892a65ac856de1bebf

SHA256
4abfdb9315d534afdc9907bcf369d15a121e02d40dc772dece65de6ee2ade651

SHA512
3be81a77ffadb309689738dec4e6f235eff195492e21451d373113e531b3f516b9db2b43857577fd9257a6014934124e26bd84a80683fe3eca6666b69fe398f1

Download Submit
memory/440-23-0x0000000005150000-0x0000000005231000-memory.dmp

Filesize
900KB

Download
memory/440-21-0x0000000000E20000-0x0000000000E46000-memory.dmp

Filesize
152KB

Download
memory/440-20-0x0000000000000000-mapping.dmp

Download
memory/852-15-0x0000000000000000-mapping.dmp

Download
memory/1072-13-0x0000000000400000-0x000000000040E000-memory.dmp

Filesize
56KB

Download
memory/1072-14-0x0000000004650000-0x00000000046CB000-memory.dmp

Filesize
492KB

Download
memory/1072-11-0x0000000000E80000-0x0000000000E81000-memory.dmp

Filesize
4KB

Download
memory/1072-10-0x000000006BF90000-0x000000006C67E000-memory.dmp

Filesize
6.9MB

Download
memory/1072-7-0x0000000000000000-mapping.dmp

Download
memory/1268-19-0x0000000003C10000-0x0000000003CC1000-memory.dmp

Filesize
708KB

Download
memory/1484-17-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1484-18-0x000000000041D0C0-mapping.dmp

Download
memory/1848-2-0x000007FEF6F80000-0x000007FEF71FA000-memory.dmp

Filesize
2.5MB

Download
memory/1992-22-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads