formbook | 9975a71837159cdfdf2dfd0a38a62ff8f8e90ada6e6a18e63cf143d861964d49

General

Target

Inquiry PR11020204168.xlsx
Size

2.5MB
MD5

abcb38dee6d515f3e5b7c6bdbc179e84
SHA1

043024ce517bc4cd801103fe1fe7402f5c5e16f3
SHA256

9975a71837159cdfdf2dfd0a38a62ff8f8e90ada6e6a18e63cf143d861964d49
SHA512

fc55de5624d9a4c57bf553061710aef07f2f92a54785ae0002040c849967d9fadc4ce8cde0aaa37bba21884d33b3854d26d92ce3a0edd1e726d04382a646fd4c

Score

10^/10

formbook xloader loader ransomware rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.learnhour.net/eaud/

Decoy

modshiro.com

mademarketingoss.com

austinjourls.info

wayupteam.com

crossingfinger.com

interseptors.com

gigashit.com

livetigo.com

halamankuningindonesia.com

windhammills.com

aylinahmet.com

mbacexonan.website

shopboxbarcelona.com

youyeslive.com

coonlinesportsbooks.com

guorunme.com

putlocker2.site

pencueaidnetwork.com

likevector.com

vulcanudachi-proclub.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/2020-22-0x000000000041D030-mapping.dmp	xloader
behavioral1/memory/2020-21-0x0000000000400000-0x0000000000428000-memory.dmp	xloader
behavioral1/memory/1332-32-0x0000000000070000-0x0000000000098000-memory.dmp	xloader

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 292 EQNEDT32.EXE
Executes dropped EXE 1 IoCs

Processes:

vbc.exe

pid process

844 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

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

Scripting
T1064
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
ransomware

System Information Discovery
T1082

flow	pid	process
6	292	EQNEDT32.EXE

pid	process
844	vbc.exe

pid	process
292	EQNEDT32.EXE
292	EQNEDT32.EXE
292	EQNEDT32.EXE
292	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exeInstallUtil.exewscript.exe

description	pid	process	target process
PID 844 set thread context of 2020	844	vbc.exe	InstallUtil.exe
PID 2020 set thread context of 1252	2020	InstallUtil.exe	Explorer.EXE
PID 1332 set thread context of 1252	1332	wscript.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

292 EQNEDT32.EXE

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

pid	process
292	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\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 (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 (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 (str)	\REGISTRY\USER\S-1-5-21-3825035466-2522850611-591511364-1000\Software\Microsoft\Internet Explorer\Toolbar\ShowDiscussionButton = "Yes"	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 (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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

2028 EXCEL.EXE

pid	process
2028	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

InstallUtil.exewscript.exe

pid	process
2020	InstallUtil.exe
2020	InstallUtil.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe
1332	wscript.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

InstallUtil.exewscript.exe

pid process

2020 InstallUtil.exe
2020 InstallUtil.exe
2020 InstallUtil.exe
1332 wscript.exe
1332 wscript.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

InstallUtil.exewscript.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	2020	InstallUtil.exe
Token: SeDebugPrivilege	1332	wscript.exe
Token: SeShutdownPrivilege	1252	Explorer.EXE
Token: SeShutdownPrivilege	1252	Explorer.EXE

Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

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

2028 EXCEL.EXE
2028 EXCEL.EXE
2028 EXCEL.EXE
2028 EXCEL.EXE
2028 EXCEL.EXE

pid	process
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
2028	EXCEL.EXE
2028	EXCEL.EXE
2028	EXCEL.EXE
2028	EXCEL.EXE
2028	EXCEL.EXE

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEwscript.exe

description	pid	process	target process
PID 292 wrote to memory of 844	292	EQNEDT32.EXE	vbc.exe
PID 292 wrote to memory of 844	292	EQNEDT32.EXE	vbc.exe
PID 292 wrote to memory of 844	292	EQNEDT32.EXE	vbc.exe
PID 292 wrote to memory of 844	292	EQNEDT32.EXE	vbc.exe
PID 844 wrote to memory of 2020	844	vbc.exe	InstallUtil.exe
PID 844 wrote to memory of 2020	844	vbc.exe	InstallUtil.exe
PID 844 wrote to memory of 2020	844	vbc.exe	InstallUtil.exe
PID 844 wrote to memory of 2020	844	vbc.exe	InstallUtil.exe
PID 844 wrote to memory of 2020	844	vbc.exe	InstallUtil.exe
PID 844 wrote to memory of 2020	844	vbc.exe	InstallUtil.exe
PID 844 wrote to memory of 2020	844	vbc.exe	InstallUtil.exe
PID 844 wrote to memory of 2020	844	vbc.exe	InstallUtil.exe
PID 844 wrote to memory of 2020	844	vbc.exe	InstallUtil.exe
PID 844 wrote to memory of 2020	844	vbc.exe	InstallUtil.exe
PID 1252 wrote to memory of 1332	1252	Explorer.EXE	wscript.exe
PID 1252 wrote to memory of 1332	1252	Explorer.EXE	wscript.exe
PID 1252 wrote to memory of 1332	1252	Explorer.EXE	wscript.exe
PID 1252 wrote to memory of 1332	1252	Explorer.EXE	wscript.exe
PID 1332 wrote to memory of 968	1332	wscript.exe	cmd.exe
PID 1332 wrote to memory of 968	1332	wscript.exe	cmd.exe
PID 1332 wrote to memory of 968	1332	wscript.exe	cmd.exe
PID 1332 wrote to memory of 968	1332	wscript.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\Inquiry PR11020204168.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:2028

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:1332

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
3⤵
PID:968

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:292

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:844

C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2020

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

System Information Discovery

2

T1082

Query Registry

1

T1012

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Public\vbc.exe
MD5
f69047c67c621e68c5b21d46fa60a629

SHA1
806f17aaa650c367015db5792319650b3bd59502

SHA256
e29bf0082c57f6a228883a9c3c8b727dc68705f4780d6275870958c81d747290

SHA512
7af7fe9f4181d099afb56f7ec58d51b441738dd19be46b0e07497737cb38568cc061b41d7623df08eaf6b4b902219e220fc923aaf72da8d4567e246e0fcb6289

Download Submit
C:\Users\Public\vbc.exe
MD5
f69047c67c621e68c5b21d46fa60a629

SHA1
806f17aaa650c367015db5792319650b3bd59502

SHA256
e29bf0082c57f6a228883a9c3c8b727dc68705f4780d6275870958c81d747290

SHA512
7af7fe9f4181d099afb56f7ec58d51b441738dd19be46b0e07497737cb38568cc061b41d7623df08eaf6b4b902219e220fc923aaf72da8d4567e246e0fcb6289

Download Submit
\Users\Public\vbc.exe
MD5
f69047c67c621e68c5b21d46fa60a629

SHA1
806f17aaa650c367015db5792319650b3bd59502

SHA256
e29bf0082c57f6a228883a9c3c8b727dc68705f4780d6275870958c81d747290

SHA512
7af7fe9f4181d099afb56f7ec58d51b441738dd19be46b0e07497737cb38568cc061b41d7623df08eaf6b4b902219e220fc923aaf72da8d4567e246e0fcb6289

Download Submit
\Users\Public\vbc.exe
MD5
f69047c67c621e68c5b21d46fa60a629

SHA1
806f17aaa650c367015db5792319650b3bd59502

SHA256
e29bf0082c57f6a228883a9c3c8b727dc68705f4780d6275870958c81d747290

SHA512
7af7fe9f4181d099afb56f7ec58d51b441738dd19be46b0e07497737cb38568cc061b41d7623df08eaf6b4b902219e220fc923aaf72da8d4567e246e0fcb6289

Download Submit
\Users\Public\vbc.exe
MD5
f69047c67c621e68c5b21d46fa60a629

SHA1
806f17aaa650c367015db5792319650b3bd59502

SHA256
e29bf0082c57f6a228883a9c3c8b727dc68705f4780d6275870958c81d747290

SHA512
7af7fe9f4181d099afb56f7ec58d51b441738dd19be46b0e07497737cb38568cc061b41d7623df08eaf6b4b902219e220fc923aaf72da8d4567e246e0fcb6289

Download Submit
\Users\Public\vbc.exe
MD5
f69047c67c621e68c5b21d46fa60a629

SHA1
806f17aaa650c367015db5792319650b3bd59502

SHA256
e29bf0082c57f6a228883a9c3c8b727dc68705f4780d6275870958c81d747290

SHA512
7af7fe9f4181d099afb56f7ec58d51b441738dd19be46b0e07497737cb38568cc061b41d7623df08eaf6b4b902219e220fc923aaf72da8d4567e246e0fcb6289

Download Submit
memory/292-5-0x0000000075C31000-0x0000000075C33000-memory.dmp

Filesize
8KB

Download
memory/844-19-0x0000000000660000-0x000000000066F000-memory.dmp

Filesize
60KB

Download
memory/844-23-0x0000000004906000-0x0000000004907000-memory.dmp

Filesize
4KB

Download
memory/844-28-0x0000000000AC0000-0x0000000000AC1000-memory.dmp

Filesize
4KB

Download
memory/844-11-0x0000000000000000-mapping.dmp

Download
memory/844-20-0x00000000048F5000-0x0000000004906000-memory.dmp

Filesize
68KB

Download
memory/844-14-0x000000006CE70000-0x000000006D55E000-memory.dmp

Filesize
6.9MB

Download
memory/844-15-0x0000000000E60000-0x0000000000E61000-memory.dmp

Filesize
4KB

Download
memory/844-17-0x00000000048F0000-0x00000000048F1000-memory.dmp

Filesize
4KB

Download
memory/844-18-0x0000000000400000-0x000000000043B000-memory.dmp

Filesize
236KB

Download
memory/968-30-0x0000000000000000-mapping.dmp

Download
memory/1080-6-0x000007FEF6B90000-0x000007FEF6E0A000-memory.dmp

Filesize
2.5MB

Download
memory/1252-27-0x0000000004240000-0x0000000004335000-memory.dmp

Filesize
980KB

Download
memory/1252-35-0x0000000006980000-0x0000000006AFE000-memory.dmp

Filesize
1.5MB

Download
memory/1332-31-0x00000000000C0000-0x00000000000E6000-memory.dmp

Filesize
152KB

Download
memory/1332-29-0x0000000000000000-mapping.dmp

Download
memory/1332-32-0x0000000000070000-0x0000000000098000-memory.dmp

Filesize
160KB

Download
memory/1332-33-0x0000000001F00000-0x0000000002203000-memory.dmp

Filesize
3.0MB

Download
memory/1332-34-0x0000000000300000-0x000000000038F000-memory.dmp

Filesize
572KB

Download
memory/2020-25-0x00000000009A0000-0x0000000000CA3000-memory.dmp

Filesize
3.0MB

Download
memory/2020-26-0x0000000000170000-0x0000000000180000-memory.dmp

Filesize
64KB

Download
memory/2020-21-0x0000000000400000-0x0000000000428000-memory.dmp

Filesize
160KB

Download
memory/2020-22-0x000000000041D030-mapping.dmp

Download
memory/2028-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/2028-2-0x000000002FB11000-0x000000002FB14000-memory.dmp

Filesize
12KB

Download
memory/2028-3-0x0000000071D11000-0x0000000071D13000-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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