formbook | 836390a3bb832e2b10fb7bf5ee0d88e7aa32179839e65b933ff2da2aabce8f89

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7v20201028
submitted
10/12/2020, 10:17

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General

Target
836390a3bb832e2b10fb7bf5ee0d88e7aa32179839e65b933ff2da2aabce8f89.xlsx
Size 2.1MB
Sample201210-pb5cft3rlx
SHA256 836390a3bb832e2b10fb7bf5ee0d88e7aa32179839e65b933ff2da2aabce8f89
MD5 c30d91c05ecd94de4ee314be1f27bf22
SHA1 fed9790f0ebc832445b34ef1caabe137ed15e3ce
SHA512 0053323cf2d7fada473a23ddaffd7be38f3015613f651c15bc10d524db3a656c7ed20d522feb9a7f3183efeb3588d53865a3a9d259c7707ce1dbbf2d2981fcfb
MD5 SHA1 SHA512

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

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
fessusesefsee.com
logansshop.net
familydalmatianhomes.com
accessible.legal
epicmassiveconcepts.com
indianfactopedia.com
exit-divorce.com
colliapse.com
nosishop.com
hayat-aljowaily.com
soundon.events
previnacovid19-br.com
traptlongview.com
splendidhotelspa.com
masterzushop.com
ednevents.com
studentdividers.com
treningi-enduro.com
hostingcoaster.com
gourmetgroceriesfast.com
thesouthbeachlife.com
teemergin.com
fixmygearfast.com
arb-invest.com
shemaledreamz.com
1819apparel.com
thedigitalsatyam.com
alparmuhendislik.com
distinctmusicproductions.com
procreditexpert.com
insights4innovation.com
jzbtl.com
1033325.com
sorteocamper.info
scheherazadelegault.com
glowportraiture.com
cleitstaapps.com
globepublishers.com
stattests.com
brainandbodystrengthcoach.com
magenx2.info
escaparati.com
wood-decor24.com
travelnetafrica.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

resource	yara_rule
behavioral1/memory/1996-68-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1996-69-0x000000000041D0C0-mapping.dmp	xloader
behavioral1/memory/912-71-0x0000000000000000-mapping.dmp	xloader

Blocklisted process makes network request 1 IoCs

flow	pid	Process
5	1512	EQNEDT32.EXE

Executes dropped EXE 6 IoCs

pid	Process
1424	vbc.exe
1516	vbc.exe
316	vbc.exe
1064	vbc.exe
1628	vbc.exe
1996	vbc.exe

Loads dropped DLL 4 IoCs

pid	Process
1512	EQNEDT32.EXE
1512	EQNEDT32.EXE
1512	EQNEDT32.EXE
1512	EQNEDT32.EXE

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1424 set thread context of 1996	1424	vbc.exe	37
PID 1996 set thread context of 1244	1996	vbc.exe	9
PID 1996 set thread context of 1244	1996	vbc.exe	9
PID 912 set thread context of 1244	912	colorcpl.exe	9

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

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

pid	Process
1512	EQNEDT32.EXE

Modifies Internet Explorer settings 1 TTPs 9 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
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
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\Se&nd to OneNote\Contexts = "55"	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
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\MenuExt\Se&nd to OneNote\ = "res://C:\\PROGRA~2\\MICROS~1\\Office14\\ONBttnIE.dll/105"	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
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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

pid	Process
1824	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
1424	vbc.exe
1424	vbc.exe
1424	vbc.exe
1424	vbc.exe
1424	vbc.exe
1424	vbc.exe
1424	vbc.exe
1424	vbc.exe
1424	vbc.exe
1424	vbc.exe
1996	vbc.exe
1996	vbc.exe
1996	vbc.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe
912	colorcpl.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1996	vbc.exe
1996	vbc.exe
1996	vbc.exe
1996	vbc.exe
912	colorcpl.exe
912	colorcpl.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	1424	vbc.exe
Token: SeDebugPrivilege	1996	vbc.exe
Token: SeDebugPrivilege	912	colorcpl.exe
Token: SeShutdownPrivilege	1244	Explorer.EXE
Token: SeShutdownPrivilege	1244	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1244	Explorer.EXE
1244	Explorer.EXE
1244	Explorer.EXE
1244	Explorer.EXE

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1244	Explorer.EXE
1244	Explorer.EXE
1244	Explorer.EXE
1244	Explorer.EXE

Suspicious use of SetWindowsHookEx 3 IoCs

pid	Process
1824	EXCEL.EXE
1824	EXCEL.EXE
1824	EXCEL.EXE

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1512 wrote to memory of 1424	1512	EQNEDT32.EXE	32
PID 1512 wrote to memory of 1424	1512	EQNEDT32.EXE	32
PID 1512 wrote to memory of 1424	1512	EQNEDT32.EXE	32
PID 1512 wrote to memory of 1424	1512	EQNEDT32.EXE	32
PID 1424 wrote to memory of 1516	1424	vbc.exe	34
PID 1424 wrote to memory of 1516	1424	vbc.exe	34
PID 1424 wrote to memory of 1516	1424	vbc.exe	34
PID 1424 wrote to memory of 1516	1424	vbc.exe	34
PID 1424 wrote to memory of 316	1424	vbc.exe	35
PID 1424 wrote to memory of 316	1424	vbc.exe	35
PID 1424 wrote to memory of 316	1424	vbc.exe	35
PID 1424 wrote to memory of 316	1424	vbc.exe	35
PID 1424 wrote to memory of 1064	1424	vbc.exe	36
PID 1424 wrote to memory of 1064	1424	vbc.exe	36
PID 1424 wrote to memory of 1064	1424	vbc.exe	36
PID 1424 wrote to memory of 1064	1424	vbc.exe	36
PID 1424 wrote to memory of 1628	1424	vbc.exe	38
PID 1424 wrote to memory of 1628	1424	vbc.exe	38
PID 1424 wrote to memory of 1628	1424	vbc.exe	38
PID 1424 wrote to memory of 1628	1424	vbc.exe	38
PID 1424 wrote to memory of 1996	1424	vbc.exe	37
PID 1424 wrote to memory of 1996	1424	vbc.exe	37
PID 1424 wrote to memory of 1996	1424	vbc.exe	37
PID 1424 wrote to memory of 1996	1424	vbc.exe	37
PID 1424 wrote to memory of 1996	1424	vbc.exe	37
PID 1424 wrote to memory of 1996	1424	vbc.exe	37
PID 1424 wrote to memory of 1996	1424	vbc.exe	37
PID 1244 wrote to memory of 912	1244	Explorer.EXE	39
PID 1244 wrote to memory of 912	1244	Explorer.EXE	39
PID 1244 wrote to memory of 912	1244	Explorer.EXE	39
PID 1244 wrote to memory of 912	1244	Explorer.EXE	39
PID 912 wrote to memory of 1476	912	colorcpl.exe	40
PID 912 wrote to memory of 1476	912	colorcpl.exe	40
PID 912 wrote to memory of 1476	912	colorcpl.exe	40
PID 912 wrote to memory of 1476	912	colorcpl.exe	40

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1244
- 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\836390a3bb832e2b10fb7bf5ee0d88e7aa32179839e65b933ff2da2aabce8f89.xlsx
  2⤵
  - Enumerates system info in registry
  - Modifies Internet Explorer settings
  - Suspicious behavior: AddClipboardFormatListener
  - Suspicious use of SetWindowsHookEx
  PID:1824
- C:\Windows\SysWOW64\colorcpl.exe
  "C:\Windows\SysWOW64\colorcpl.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:912
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Public\vbc.exe"
    3⤵
    PID:1476

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:1512
- 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:1424
- - C:\Users\Public\vbc.exe
    "{path}"
    3⤵
    - Executes dropped EXE
    PID:1516
- - C:\Users\Public\vbc.exe
    "{path}"
    3⤵
    - Executes dropped EXE
    PID:316
- - C:\Users\Public\vbc.exe
    "{path}"
    3⤵
    - Executes dropped EXE
    PID:1064
- - 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:1996
- - C:\Users\Public\vbc.exe
    "{path}"
    3⤵
    - Executes dropped EXE
    PID:1628

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Exploitation for Client Execution

T1203

Scripting

T1064

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Scripting

T1064

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/792-2-0x000007FEF5B50000-0x000007FEF5DCA000-memory.dmp

Download

memory/912-72-0x0000000000D20000-0x0000000000D38000-memory.dmp

Download

memory/912-74-0x0000000004300000-0x00000000043D9000-memory.dmp

Download

memory/1424-63-0x0000000006940000-0x00000000069A1000-memory.dmp

Download

memory/1424-62-0x0000000000520000-0x000000000052E000-memory.dmp

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memory/1424-13-0x0000000004280000-0x00000000042E1000-memory.dmp

Download

memory/1424-11-0x0000000000150000-0x0000000000151000-memory.dmp

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memory/1424-10-0x000000006BEC0000-0x000000006C5AE000-memory.dmp

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memory/1996-68-0x0000000000400000-0x0000000000429000-memory.dmp

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