formbook | f535ff7416a31c3f067b61aea08aab08006eaf2dd790dcfc89c05a1f6343f17b

Analysis

max time kernel
150s
max time network
150s
platform
windows7_x64
resource
win7v20201028
submitted
18-01-2021 07:26

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General

Target

arrival_notice.xlsx
Size

2.4MB
MD5

7391442ae2a0d3ae6df6f7552f73b753
SHA1

b7b24c1de89b767235b20c0574bd3fccea7a3061
SHA256

f535ff7416a31c3f067b61aea08aab08006eaf2dd790dcfc89c05a1f6343f17b
SHA512

aed9b9610a3b14ea2e393ebab73e7f6f9af1aaa9e8264496f0efdc39680a7ca2f7482e926544a12075be20e1de7fb56107f2215004c041e1ea03e61ef1958205

Score

10^/10

formbook xloader loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

http://www.inreachpt.com/gqx2/

Decoy

calusaptamiami.com

starlinkwebservices.com

lakeviewbarbershonola.com

oaklandraidersjerseyspop.com

ohiotechreport.com

eligetucafetera.com

tu4343.com

abstract-elearning.com

thebabylashes.com

athleteshive.com

fanninhomesforless.com

sembracna.com

servicesyn.com

bellairechoice.com

tmpaas.com

eyepaa.com

stickerzblvd.com

rentfs.com

nadya-shanab.com

microwgreens.net

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/1512-19-0x000000000041D070-mapping.dmp	xloader
behavioral1/memory/1512-18-0x0000000000400000-0x0000000000429000-memory.dmp	xloader
behavioral1/memory/1508-37-0x00000000000F0000-0x0000000000119000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1968 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

556 vbc.exe
1512 vbc.exe

flow	pid	process
6	1968	EQNEDT32.EXE

pid	process
556	vbc.exe
1512	vbc.exe

Loads dropped DLL 9 IoCs

Processes:

EQNEDT32.EXEWerFault.exe

pid	process
1968	EQNEDT32.EXE
1968	EQNEDT32.EXE
1968	EQNEDT32.EXE
1968	EQNEDT32.EXE
1228	WerFault.exe
1228	WerFault.exe
1228	WerFault.exe
1228	WerFault.exe
1228	WerFault.exe

Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.execmstp.exe

description	pid	process	target process
PID 556 set thread context of 1512	556	vbc.exe	vbc.exe
PID 1512 set thread context of 1252	1512	vbc.exe	Explorer.EXE
PID 1508 set thread context of 1252	1508	cmstp.exe	Explorer.EXE

Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

1228 556 WerFault.exe vbc.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

1968 EQNEDT32.EXE

pid	pid_target	process	target process
1228	556	WerFault.exe	vbc.exe

description	ioc	process
Key opened	\REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor	EXCEL.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\Toolbar	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 (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
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\Toolbar\ShowDiscussionButton = "Yes"	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2032 EXCEL.EXE

pid	process
2032	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 35 IoCs

Processes:

vbc.exeWerFault.execmstp.exe

pid	process
1512	vbc.exe
1512	vbc.exe
1228	WerFault.exe
1228	WerFault.exe
1228	WerFault.exe
1228	WerFault.exe
1228	WerFault.exe
1228	WerFault.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe
1508	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.execmstp.exe

pid process

1512 vbc.exe
1512 vbc.exe
1512 vbc.exe
1508 cmstp.exe
1508 cmstp.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

vbc.exeWerFault.exeExplorer.EXEcmstp.exe

description	pid	process
Token: SeDebugPrivilege	1512	vbc.exe
Token: SeDebugPrivilege	1228	WerFault.exe
Token: SeShutdownPrivilege	1252	Explorer.EXE
Token: SeDebugPrivilege	1508	cmstp.exe

Suspicious use of FindShellTrayWindow 6 IoCs

Processes:

Explorer.EXE

pid process

1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE
1252 Explorer.EXE
Suspicious use of SetWindowsHookEx 5 IoCs

Processes:

EXCEL.EXE

pid process

2032 EXCEL.EXE
2032 EXCEL.EXE
2032 EXCEL.EXE
2032 EXCEL.EXE
2032 EXCEL.EXE

pid	process
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE

pid	process
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE
1252	Explorer.EXE

pid	process
2032	EXCEL.EXE
2032	EXCEL.EXE
2032	EXCEL.EXE
2032	EXCEL.EXE
2032	EXCEL.EXE

Suspicious use of WriteProcessMemory 26 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1968 wrote to memory of 556	1968	EQNEDT32.EXE	vbc.exe
PID 1968 wrote to memory of 556	1968	EQNEDT32.EXE	vbc.exe
PID 1968 wrote to memory of 556	1968	EQNEDT32.EXE	vbc.exe
PID 1968 wrote to memory of 556	1968	EQNEDT32.EXE	vbc.exe
PID 556 wrote to memory of 1512	556	vbc.exe	vbc.exe
PID 556 wrote to memory of 1512	556	vbc.exe	vbc.exe
PID 556 wrote to memory of 1512	556	vbc.exe	vbc.exe
PID 556 wrote to memory of 1512	556	vbc.exe	vbc.exe
PID 556 wrote to memory of 1512	556	vbc.exe	vbc.exe
PID 556 wrote to memory of 1512	556	vbc.exe	vbc.exe
PID 556 wrote to memory of 1512	556	vbc.exe	vbc.exe
PID 1252 wrote to memory of 1508	1252	Explorer.EXE	cmstp.exe
PID 1252 wrote to memory of 1508	1252	Explorer.EXE	cmstp.exe
PID 1252 wrote to memory of 1508	1252	Explorer.EXE	cmstp.exe
PID 1252 wrote to memory of 1508	1252	Explorer.EXE	cmstp.exe
PID 1252 wrote to memory of 1508	1252	Explorer.EXE	cmstp.exe
PID 1252 wrote to memory of 1508	1252	Explorer.EXE	cmstp.exe
PID 1252 wrote to memory of 1508	1252	Explorer.EXE	cmstp.exe
PID 556 wrote to memory of 1228	556	vbc.exe	WerFault.exe
PID 556 wrote to memory of 1228	556	vbc.exe	WerFault.exe
PID 556 wrote to memory of 1228	556	vbc.exe	WerFault.exe
PID 556 wrote to memory of 1228	556	vbc.exe	WerFault.exe
PID 1508 wrote to memory of 1108	1508	cmstp.exe	cmd.exe
PID 1508 wrote to memory of 1108	1508	cmstp.exe	cmd.exe
PID 1508 wrote to memory of 1108	1508	cmstp.exe	cmd.exe
PID 1508 wrote to memory of 1108	1508	cmstp.exe	cmd.exe

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:1252

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\arrival_notice.xlsx
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2032

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1508

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1108

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:1968

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:556

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:1512

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 556 -s 848
3⤵
- Loads dropped DLL
- Program crash
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1228

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scripting

T1064

Exploitation for Client Execution

T1203

Persistence

Privilege Escalation

Defense Evasion

Scripting

T1064

Modify Registry

T1112

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Public\vbc.exe
MD5
3096a3c81ff6c435ded33765f5f10be1

SHA1
a481af4cfdf065c318656284af26546e4d69f9f1

SHA256
083210286a8bfd2e1cbd05ae990725c8d41c4a6b3bdf71c8325b9cb11781a1aa

SHA512
7500f636b064d2fea3835c06845244815da35b9b9b2ca1054c317cc38b6e85c097857dbca0e25d6a68bbef047f4c858f53fa4191f20f0583417ecee66055e6df

Download Submit
C:\Users\Public\vbc.exe
MD5
3096a3c81ff6c435ded33765f5f10be1

SHA1
a481af4cfdf065c318656284af26546e4d69f9f1

SHA256
083210286a8bfd2e1cbd05ae990725c8d41c4a6b3bdf71c8325b9cb11781a1aa

SHA512
7500f636b064d2fea3835c06845244815da35b9b9b2ca1054c317cc38b6e85c097857dbca0e25d6a68bbef047f4c858f53fa4191f20f0583417ecee66055e6df

Download Submit
C:\Users\Public\vbc.exe
MD5
3096a3c81ff6c435ded33765f5f10be1

SHA1
a481af4cfdf065c318656284af26546e4d69f9f1

SHA256
083210286a8bfd2e1cbd05ae990725c8d41c4a6b3bdf71c8325b9cb11781a1aa

SHA512
7500f636b064d2fea3835c06845244815da35b9b9b2ca1054c317cc38b6e85c097857dbca0e25d6a68bbef047f4c858f53fa4191f20f0583417ecee66055e6df

Download Submit
\Users\Public\vbc.exe
MD5
3096a3c81ff6c435ded33765f5f10be1

SHA1
a481af4cfdf065c318656284af26546e4d69f9f1

SHA256
083210286a8bfd2e1cbd05ae990725c8d41c4a6b3bdf71c8325b9cb11781a1aa

SHA512
7500f636b064d2fea3835c06845244815da35b9b9b2ca1054c317cc38b6e85c097857dbca0e25d6a68bbef047f4c858f53fa4191f20f0583417ecee66055e6df

Download Submit
\Users\Public\vbc.exe
MD5
3096a3c81ff6c435ded33765f5f10be1

SHA1
a481af4cfdf065c318656284af26546e4d69f9f1

SHA256
083210286a8bfd2e1cbd05ae990725c8d41c4a6b3bdf71c8325b9cb11781a1aa

SHA512
7500f636b064d2fea3835c06845244815da35b9b9b2ca1054c317cc38b6e85c097857dbca0e25d6a68bbef047f4c858f53fa4191f20f0583417ecee66055e6df

Download Submit
\Users\Public\vbc.exe
MD5
3096a3c81ff6c435ded33765f5f10be1

SHA1
a481af4cfdf065c318656284af26546e4d69f9f1

SHA256
083210286a8bfd2e1cbd05ae990725c8d41c4a6b3bdf71c8325b9cb11781a1aa

SHA512
7500f636b064d2fea3835c06845244815da35b9b9b2ca1054c317cc38b6e85c097857dbca0e25d6a68bbef047f4c858f53fa4191f20f0583417ecee66055e6df

Download Submit
\Users\Public\vbc.exe
MD5
3096a3c81ff6c435ded33765f5f10be1

SHA1
a481af4cfdf065c318656284af26546e4d69f9f1

SHA256
083210286a8bfd2e1cbd05ae990725c8d41c4a6b3bdf71c8325b9cb11781a1aa

SHA512
7500f636b064d2fea3835c06845244815da35b9b9b2ca1054c317cc38b6e85c097857dbca0e25d6a68bbef047f4c858f53fa4191f20f0583417ecee66055e6df

Download Submit
\Users\Public\vbc.exe
MD5
3096a3c81ff6c435ded33765f5f10be1

SHA1
a481af4cfdf065c318656284af26546e4d69f9f1

SHA256
083210286a8bfd2e1cbd05ae990725c8d41c4a6b3bdf71c8325b9cb11781a1aa

SHA512
7500f636b064d2fea3835c06845244815da35b9b9b2ca1054c317cc38b6e85c097857dbca0e25d6a68bbef047f4c858f53fa4191f20f0583417ecee66055e6df

Download Submit
\Users\Public\vbc.exe
MD5
3096a3c81ff6c435ded33765f5f10be1

SHA1
a481af4cfdf065c318656284af26546e4d69f9f1

SHA256
083210286a8bfd2e1cbd05ae990725c8d41c4a6b3bdf71c8325b9cb11781a1aa

SHA512
7500f636b064d2fea3835c06845244815da35b9b9b2ca1054c317cc38b6e85c097857dbca0e25d6a68bbef047f4c858f53fa4191f20f0583417ecee66055e6df

Download Submit
\Users\Public\vbc.exe
MD5
3096a3c81ff6c435ded33765f5f10be1

SHA1
a481af4cfdf065c318656284af26546e4d69f9f1

SHA256
083210286a8bfd2e1cbd05ae990725c8d41c4a6b3bdf71c8325b9cb11781a1aa

SHA512
7500f636b064d2fea3835c06845244815da35b9b9b2ca1054c317cc38b6e85c097857dbca0e25d6a68bbef047f4c858f53fa4191f20f0583417ecee66055e6df

Download Submit
\Users\Public\vbc.exe
MD5
3096a3c81ff6c435ded33765f5f10be1

SHA1
a481af4cfdf065c318656284af26546e4d69f9f1

SHA256
083210286a8bfd2e1cbd05ae990725c8d41c4a6b3bdf71c8325b9cb11781a1aa

SHA512
7500f636b064d2fea3835c06845244815da35b9b9b2ca1054c317cc38b6e85c097857dbca0e25d6a68bbef047f4c858f53fa4191f20f0583417ecee66055e6df

Download Submit
\Users\Public\vbc.exe
MD5
3096a3c81ff6c435ded33765f5f10be1

SHA1
a481af4cfdf065c318656284af26546e4d69f9f1

SHA256
083210286a8bfd2e1cbd05ae990725c8d41c4a6b3bdf71c8325b9cb11781a1aa

SHA512
7500f636b064d2fea3835c06845244815da35b9b9b2ca1054c317cc38b6e85c097857dbca0e25d6a68bbef047f4c858f53fa4191f20f0583417ecee66055e6df

Download Submit
memory/556-11-0x0000000000000000-mapping.dmp

Download
memory/556-16-0x0000000001F90000-0x0000000001FE6000-memory.dmp

Filesize
344KB

Download
memory/556-17-0x00000000004D0000-0x00000000004DF000-memory.dmp

Filesize
60KB

Download
memory/556-14-0x000000006CE70000-0x000000006D55E000-memory.dmp

Filesize
6.9MB

Download
memory/556-21-0x0000000001E60000-0x0000000001E61000-memory.dmp

Filesize
4KB

Download
memory/556-15-0x0000000000820000-0x0000000000821000-memory.dmp

Filesize
4KB

Download
memory/1108-39-0x0000000000000000-mapping.dmp

Download
memory/1228-27-0x0000000002150000-0x0000000002161000-memory.dmp

Filesize
68KB

Download
memory/1228-33-0x0000000000200000-0x0000000000201000-memory.dmp

Filesize
4KB

Download
memory/1228-23-0x0000000000000000-mapping.dmp

Download
memory/1252-41-0x0000000006CE0000-0x0000000006E11000-memory.dmp

Filesize
1.2MB

Download
memory/1252-26-0x0000000006980000-0x0000000006AC6000-memory.dmp

Filesize
1.3MB

Download
memory/1508-34-0x0000000000000000-mapping.dmp

Download
memory/1508-37-0x00000000000F0000-0x0000000000119000-memory.dmp

Filesize
164KB

Download
memory/1508-40-0x0000000000400000-0x0000000000490000-memory.dmp

Filesize
576KB

Download
memory/1508-38-0x0000000002030000-0x0000000002333000-memory.dmp

Filesize
3.0MB

Download
memory/1508-36-0x0000000000380000-0x0000000000398000-memory.dmp

Filesize
96KB

Download
memory/1512-24-0x0000000000B30000-0x0000000000E33000-memory.dmp

Filesize
3.0MB

Download
memory/1512-25-0x0000000000190000-0x00000000001A1000-memory.dmp

Filesize
68KB

Download
memory/1512-18-0x0000000000400000-0x0000000000429000-memory.dmp

Filesize
164KB

Download
memory/1512-19-0x000000000041D070-mapping.dmp

Download
memory/1732-6-0x000007FEF6B90000-0x000007FEF6E0A000-memory.dmp

Filesize
2.5MB

Download
memory/1968-5-0x0000000075C31000-0x0000000075C33000-memory.dmp

Filesize
8KB

Download
memory/2032-2-0x000000002FD61000-0x000000002FD64000-memory.dmp

Filesize
12KB

Download
memory/2032-3-0x0000000071D11000-0x0000000071D13000-memory.dmp

Filesize
8KB

Download
memory/2032-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download