formbook | 5e3ef4890525eed5cb32b6bb1f90bcfc57932157b2a2abc349a6d2dfb2a8cb05

General

Target

SHEXD2101127S_ShippingDocument_DkD.xlsx
Size

1.6MB
MD5

321ec69aefdedc184ab2b86fde9d6b9a
SHA1

5fd74e6732d91f2984eaed33536c8a2f847aa41d
SHA256

5e3ef4890525eed5cb32b6bb1f90bcfc57932157b2a2abc349a6d2dfb2a8cb05
SHA512

d51ea1cdf634ca2b871cc3f792048bb0c18e1f6c0115aa2c44a6ce4ea3083fce5050ff6a614ba790cb2221564d1a8e6c099d70fe43b3d8bf4e5d11e49cd7b254

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.stonescapes1.com/de92/

Decoy

zindaginews.com

tyelevator.com

schustermaninterests.com

algemixdelchef.com

doubscollectivites.com

e-butchery.com

hellbentmask.com

jumbpprivacy.com

teeniestiedye.com

playfulartwork.com

desertvacahs.com

w5470-hed.net

nepalearningpods.com

smoothandsleek.com

thecannaglow.com

torrentkittyla.com

industrytoyou.com

raquelvargas.net

rlc-nc.net

cryptoprises.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/1640-20-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/1640-21-0x000000000041D010-mapping.dmp	xloader
behavioral1/memory/1320-32-0x0000000000100000-0x0000000000128000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1656 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

1336 vbc.exe
1640 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1656 EQNEDT32.EXE
1656 EQNEDT32.EXE
1656 EQNEDT32.EXE
1656 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
7	1656	EQNEDT32.EXE

pid	process
1336	vbc.exe
1640	vbc.exe

pid	process
1656	EQNEDT32.EXE
1656	EQNEDT32.EXE
1656	EQNEDT32.EXE
1656	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exeexplorer.exe

description	pid	process	target process
PID 1336 set thread context of 1640	1336	vbc.exe	vbc.exe
PID 1640 set thread context of 1248	1640	vbc.exe	Explorer.EXE
PID 1320 set thread context of 1248	1320	explorer.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

1656 EQNEDT32.EXE

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

pid	process
1656	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-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt\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
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 (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\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\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

1668 EXCEL.EXE

pid	process
1668	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

vbc.exeexplorer.exe

pid	process
1640	vbc.exe
1640	vbc.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe
1320	explorer.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exeexplorer.exe

pid process

1640 vbc.exe
1640 vbc.exe
1640 vbc.exe
1320 explorer.exe
1320 explorer.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exeexplorer.exe

description pid process

Token: SeDebugPrivilege 1640 vbc.exe
Token: SeDebugPrivilege 1320 explorer.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1248 Explorer.EXE
1248 Explorer.EXE
1248 Explorer.EXE
1248 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1248 Explorer.EXE
1248 Explorer.EXE
1248 Explorer.EXE
1248 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1668 EXCEL.EXE
1668 EXCEL.EXE
1668 EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	1640	vbc.exe
Token: SeDebugPrivilege	1320	explorer.exe

pid	process
1248	Explorer.EXE
1248	Explorer.EXE
1248	Explorer.EXE
1248	Explorer.EXE

pid	process
1248	Explorer.EXE
1248	Explorer.EXE
1248	Explorer.EXE
1248	Explorer.EXE

pid	process
1668	EXCEL.EXE
1668	EXCEL.EXE
1668	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEexplorer.exe

description	pid	process	target process
PID 1656 wrote to memory of 1336	1656	EQNEDT32.EXE	vbc.exe
PID 1656 wrote to memory of 1336	1656	EQNEDT32.EXE	vbc.exe
PID 1656 wrote to memory of 1336	1656	EQNEDT32.EXE	vbc.exe
PID 1656 wrote to memory of 1336	1656	EQNEDT32.EXE	vbc.exe
PID 1336 wrote to memory of 1640	1336	vbc.exe	vbc.exe
PID 1336 wrote to memory of 1640	1336	vbc.exe	vbc.exe
PID 1336 wrote to memory of 1640	1336	vbc.exe	vbc.exe
PID 1336 wrote to memory of 1640	1336	vbc.exe	vbc.exe
PID 1336 wrote to memory of 1640	1336	vbc.exe	vbc.exe
PID 1336 wrote to memory of 1640	1336	vbc.exe	vbc.exe
PID 1336 wrote to memory of 1640	1336	vbc.exe	vbc.exe
PID 1248 wrote to memory of 1320	1248	Explorer.EXE	explorer.exe
PID 1248 wrote to memory of 1320	1248	Explorer.EXE	explorer.exe
PID 1248 wrote to memory of 1320	1248	Explorer.EXE	explorer.exe
PID 1248 wrote to memory of 1320	1248	Explorer.EXE	explorer.exe
PID 1320 wrote to memory of 1664	1320	explorer.exe	cmd.exe
PID 1320 wrote to memory of 1664	1320	explorer.exe	cmd.exe
PID 1320 wrote to memory of 1664	1320	explorer.exe	cmd.exe
PID 1320 wrote to memory of 1664	1320	explorer.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:1248

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\SHEXD2101127S_ShippingDocument_DkD.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1668

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1320

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1664

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:1656

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1336

C:\Users\Public\vbc.exe
"{path}"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1640

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
786180a5141bf4ea48e26910d2bf9061

SHA1
f77224c2ac0c9dd746fc22b102da2a534bf889e2

SHA256
63289870bb6e2bbb13afd47bf630c048e593afacc5c968939855f85ca5022ea4

SHA512
cbdb00fe20e39c52ac736e75bc2c93abecc0d0ecbc9c10d7b62e88f6e574f99ee545a5ca34578dcdc564cd32fe3e9fb1258bc35d09304b094a32c2f89a492d28

Download Submit
C:\Users\Public\vbc.exe
MD5
786180a5141bf4ea48e26910d2bf9061

SHA1
f77224c2ac0c9dd746fc22b102da2a534bf889e2

SHA256
63289870bb6e2bbb13afd47bf630c048e593afacc5c968939855f85ca5022ea4

SHA512
cbdb00fe20e39c52ac736e75bc2c93abecc0d0ecbc9c10d7b62e88f6e574f99ee545a5ca34578dcdc564cd32fe3e9fb1258bc35d09304b094a32c2f89a492d28

Download Submit
C:\Users\Public\vbc.exe
MD5
786180a5141bf4ea48e26910d2bf9061

SHA1
f77224c2ac0c9dd746fc22b102da2a534bf889e2

SHA256
63289870bb6e2bbb13afd47bf630c048e593afacc5c968939855f85ca5022ea4

SHA512
cbdb00fe20e39c52ac736e75bc2c93abecc0d0ecbc9c10d7b62e88f6e574f99ee545a5ca34578dcdc564cd32fe3e9fb1258bc35d09304b094a32c2f89a492d28

Download Submit
\Users\Public\vbc.exe
MD5
786180a5141bf4ea48e26910d2bf9061

SHA1
f77224c2ac0c9dd746fc22b102da2a534bf889e2

SHA256
63289870bb6e2bbb13afd47bf630c048e593afacc5c968939855f85ca5022ea4

SHA512
cbdb00fe20e39c52ac736e75bc2c93abecc0d0ecbc9c10d7b62e88f6e574f99ee545a5ca34578dcdc564cd32fe3e9fb1258bc35d09304b094a32c2f89a492d28

Download Submit
\Users\Public\vbc.exe
MD5
786180a5141bf4ea48e26910d2bf9061

SHA1
f77224c2ac0c9dd746fc22b102da2a534bf889e2

SHA256
63289870bb6e2bbb13afd47bf630c048e593afacc5c968939855f85ca5022ea4

SHA512
cbdb00fe20e39c52ac736e75bc2c93abecc0d0ecbc9c10d7b62e88f6e574f99ee545a5ca34578dcdc564cd32fe3e9fb1258bc35d09304b094a32c2f89a492d28

Download Submit
\Users\Public\vbc.exe
MD5
786180a5141bf4ea48e26910d2bf9061

SHA1
f77224c2ac0c9dd746fc22b102da2a534bf889e2

SHA256
63289870bb6e2bbb13afd47bf630c048e593afacc5c968939855f85ca5022ea4

SHA512
cbdb00fe20e39c52ac736e75bc2c93abecc0d0ecbc9c10d7b62e88f6e574f99ee545a5ca34578dcdc564cd32fe3e9fb1258bc35d09304b094a32c2f89a492d28

Download Submit
\Users\Public\vbc.exe
MD5
786180a5141bf4ea48e26910d2bf9061

SHA1
f77224c2ac0c9dd746fc22b102da2a534bf889e2

SHA256
63289870bb6e2bbb13afd47bf630c048e593afacc5c968939855f85ca5022ea4

SHA512
cbdb00fe20e39c52ac736e75bc2c93abecc0d0ecbc9c10d7b62e88f6e574f99ee545a5ca34578dcdc564cd32fe3e9fb1258bc35d09304b094a32c2f89a492d28

Download Submit
memory/900-6-0x000007FEF7080000-0x000007FEF72FA000-memory.dmp

Filesize
2.5MB

Download
memory/1248-35-0x00000000066C0000-0x00000000067C7000-memory.dmp

Filesize
1.0MB

Download
memory/1248-26-0x00000000064C0000-0x00000000065C3000-memory.dmp

Filesize
1.0MB

Download
memory/1320-30-0x00000000008F0000-0x0000000000B71000-memory.dmp

Filesize
2.5MB

Download
memory/1320-32-0x0000000000100000-0x0000000000128000-memory.dmp

Filesize
160KB

Download
memory/1320-34-0x0000000002220000-0x00000000022AF000-memory.dmp

Filesize
572KB

Download
memory/1320-31-0x00000000022B0000-0x00000000025B3000-memory.dmp

Filesize
3.0MB

Download
memory/1320-29-0x000000006C631000-0x000000006C633000-memory.dmp

Filesize
8KB

Download
memory/1320-27-0x0000000000000000-mapping.dmp

Download
memory/1336-17-0x0000000004E90000-0x0000000004E91000-memory.dmp

Filesize
4KB

Download
memory/1336-18-0x0000000000320000-0x000000000032E000-memory.dmp

Filesize
56KB

Download
memory/1336-19-0x0000000004E30000-0x0000000004E87000-memory.dmp

Filesize
348KB

Download
memory/1336-11-0x0000000000000000-mapping.dmp

Download
memory/1336-14-0x000000006C0B0000-0x000000006C79E000-memory.dmp

Filesize
6.9MB

Download
memory/1336-15-0x0000000000FD0000-0x0000000000FD1000-memory.dmp

Filesize
4KB

Download
memory/1640-24-0x0000000000930000-0x0000000000C33000-memory.dmp

Filesize
3.0MB

Download
memory/1640-25-0x0000000000120000-0x0000000000130000-memory.dmp

Filesize
64KB

Download
memory/1640-20-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/1640-21-0x000000000041D010-mapping.dmp

Download
memory/1656-5-0x0000000074B31000-0x0000000074B33000-memory.dmp

Filesize
8KB

Download
memory/1664-33-0x0000000000000000-mapping.dmp

Download
memory/1668-2-0x000000002F161000-0x000000002F164000-memory.dmp

Filesize
12KB

Download
memory/1668-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1668-3-0x0000000071001000-0x0000000071003000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads