formbook | 255389c8a0f1e5da9cd479450c1e80210c14a3e36fb47f0898f24aabc8a962db

General

Target

Alfa Laval Aalborg AS Statement of Account.xlsx
Size

1.7MB
MD5

8a26ff06c494c96457f847edb7ca80c0
SHA1

a165479dde0175896cd0d70bb68616688bb7d328
SHA256

255389c8a0f1e5da9cd479450c1e80210c14a3e36fb47f0898f24aabc8a962db
SHA512

186686e95d7255b5d37b646eb1a2a7de07f2888c77a65cab4724c127d28cedd1e3fdac77af4cd74f8affecd10f637ab94844a7d27cb4528341ce0f0d8f5e597a

Score

10^/10

formbook rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

C2

http://www.bytecommunication.com/aky/

Decoy

jeiksaoeklea.com

sagame-auto.net

soloseriolavoro.com

thecreatorsbook.com

superskritch.com

oroxequipment.com

heart-of-art.online

liwedfg.com

fisherofsouls.com

jota.xyz

nehyam.com

smart-contact-delivery.com

hoom.guru

dgryds.com

thesoakcpd.com

mishv.com

rings-factory.info

bero-craft-beers.com

podcastnamegenerators.com

856379813.xyz

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Formbook Payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/788-15-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/788-16-0x000000000041EB60-mapping.dmp	formbook
behavioral1/memory/2000-18-0x0000000000000000-mapping.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

7 1384 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

1940 vbc.exe
788 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1384 EQNEDT32.EXE
1384 EQNEDT32.EXE
1384 EQNEDT32.EXE
1384 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
7	1384	EQNEDT32.EXE

pid	process
1940	vbc.exe
788	vbc.exe

pid	process
1384	EQNEDT32.EXE
1384	EQNEDT32.EXE
1384	EQNEDT32.EXE
1384	EQNEDT32.EXE

Suspicious use of SetThreadContext 4 IoCs

Processes:

vbc.exevbc.exewscript.exe

description	pid	process	target process
PID 1940 set thread context of 788	1940	vbc.exe	vbc.exe
PID 788 set thread context of 1256	788	vbc.exe	Explorer.EXE
PID 788 set thread context of 1256	788	vbc.exe	Explorer.EXE
PID 2000 set thread context of 1256	2000	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

1384 EQNEDT32.EXE

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

pid	process
1384	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-1-5-21-3825035466-2522850611-591511364-1000\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
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
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
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

Processes:

EXCEL.EXE

pid process

1080 EXCEL.EXE

pid	process
1080	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 22 IoCs

Processes:

vbc.exewscript.exe

pid	process
788	vbc.exe
788	vbc.exe
788	vbc.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe
2000	wscript.exe

Suspicious behavior: MapViewOfSection 6 IoCs

Processes:

vbc.exewscript.exe

pid process

788 vbc.exe
788 vbc.exe
788 vbc.exe
788 vbc.exe
2000 wscript.exe
2000 wscript.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exewscript.exe

description pid process

Token: SeDebugPrivilege 788 vbc.exe
Token: SeDebugPrivilege 2000 wscript.exe
Suspicious use of FindShellTrayWindow 4 IoCs

Processes:

Explorer.EXE

pid process

1256 Explorer.EXE
1256 Explorer.EXE
1256 Explorer.EXE
1256 Explorer.EXE
Suspicious use of SendNotifyMessage 4 IoCs

Processes:

Explorer.EXE

pid process

1256 Explorer.EXE
1256 Explorer.EXE
1256 Explorer.EXE
1256 Explorer.EXE
Suspicious use of SetWindowsHookEx 3 IoCs

Processes:

EXCEL.EXE

pid process

1080 EXCEL.EXE
1080 EXCEL.EXE
1080 EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	788	vbc.exe
Token: SeDebugPrivilege	2000	wscript.exe

pid	process
1256	Explorer.EXE
1256	Explorer.EXE
1256	Explorer.EXE
1256	Explorer.EXE

pid	process
1256	Explorer.EXE
1256	Explorer.EXE
1256	Explorer.EXE
1256	Explorer.EXE

pid	process
1080	EXCEL.EXE
1080	EXCEL.EXE
1080	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXEwscript.exe

description	pid	process	target process
PID 1384 wrote to memory of 1940	1384	EQNEDT32.EXE	vbc.exe
PID 1384 wrote to memory of 1940	1384	EQNEDT32.EXE	vbc.exe
PID 1384 wrote to memory of 1940	1384	EQNEDT32.EXE	vbc.exe
PID 1384 wrote to memory of 1940	1384	EQNEDT32.EXE	vbc.exe
PID 1940 wrote to memory of 788	1940	vbc.exe	vbc.exe
PID 1940 wrote to memory of 788	1940	vbc.exe	vbc.exe
PID 1940 wrote to memory of 788	1940	vbc.exe	vbc.exe
PID 1940 wrote to memory of 788	1940	vbc.exe	vbc.exe
PID 1940 wrote to memory of 788	1940	vbc.exe	vbc.exe
PID 1940 wrote to memory of 788	1940	vbc.exe	vbc.exe
PID 1940 wrote to memory of 788	1940	vbc.exe	vbc.exe
PID 1256 wrote to memory of 2000	1256	Explorer.EXE	wscript.exe
PID 1256 wrote to memory of 2000	1256	Explorer.EXE	wscript.exe
PID 1256 wrote to memory of 2000	1256	Explorer.EXE	wscript.exe
PID 1256 wrote to memory of 2000	1256	Explorer.EXE	wscript.exe
PID 2000 wrote to memory of 396	2000	wscript.exe	cmd.exe
PID 2000 wrote to memory of 396	2000	wscript.exe	cmd.exe
PID 2000 wrote to memory of 396	2000	wscript.exe	cmd.exe
PID 2000 wrote to memory of 396	2000	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:1256

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\Alfa Laval Aalborg AS Statement of Account.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1080

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:2000

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:396

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:1384

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1940

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:788

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
c343b0f63b6c4dc9d3f5dd7864f6edd6

SHA1
d28b97bb29685705b0b38f3d955a0ddb33b414dc

SHA256
c58e2d245f99b53a5d4006c4f1daac8085b622eeab9958a576e7b82ae8e8380d

SHA512
e3737d85c8ecb2ceb47ee6dc6505f38f4a4b467780fabf0bb179f35175264b1b4114fd9e368af186b774500cc9d67fc5919c1b90d6c0f377a7a2b3de09d69c52

Download Submit
C:\Users\Public\vbc.exe
MD5
c343b0f63b6c4dc9d3f5dd7864f6edd6

SHA1
d28b97bb29685705b0b38f3d955a0ddb33b414dc

SHA256
c58e2d245f99b53a5d4006c4f1daac8085b622eeab9958a576e7b82ae8e8380d

SHA512
e3737d85c8ecb2ceb47ee6dc6505f38f4a4b467780fabf0bb179f35175264b1b4114fd9e368af186b774500cc9d67fc5919c1b90d6c0f377a7a2b3de09d69c52

Download Submit
C:\Users\Public\vbc.exe
MD5
c343b0f63b6c4dc9d3f5dd7864f6edd6

SHA1
d28b97bb29685705b0b38f3d955a0ddb33b414dc

SHA256
c58e2d245f99b53a5d4006c4f1daac8085b622eeab9958a576e7b82ae8e8380d

SHA512
e3737d85c8ecb2ceb47ee6dc6505f38f4a4b467780fabf0bb179f35175264b1b4114fd9e368af186b774500cc9d67fc5919c1b90d6c0f377a7a2b3de09d69c52

Download Submit
\Users\Public\vbc.exe
MD5
c343b0f63b6c4dc9d3f5dd7864f6edd6

SHA1
d28b97bb29685705b0b38f3d955a0ddb33b414dc

SHA256
c58e2d245f99b53a5d4006c4f1daac8085b622eeab9958a576e7b82ae8e8380d

SHA512
e3737d85c8ecb2ceb47ee6dc6505f38f4a4b467780fabf0bb179f35175264b1b4114fd9e368af186b774500cc9d67fc5919c1b90d6c0f377a7a2b3de09d69c52

Download Submit
\Users\Public\vbc.exe
MD5
c343b0f63b6c4dc9d3f5dd7864f6edd6

SHA1
d28b97bb29685705b0b38f3d955a0ddb33b414dc

SHA256
c58e2d245f99b53a5d4006c4f1daac8085b622eeab9958a576e7b82ae8e8380d

SHA512
e3737d85c8ecb2ceb47ee6dc6505f38f4a4b467780fabf0bb179f35175264b1b4114fd9e368af186b774500cc9d67fc5919c1b90d6c0f377a7a2b3de09d69c52

Download Submit
\Users\Public\vbc.exe
MD5
c343b0f63b6c4dc9d3f5dd7864f6edd6

SHA1
d28b97bb29685705b0b38f3d955a0ddb33b414dc

SHA256
c58e2d245f99b53a5d4006c4f1daac8085b622eeab9958a576e7b82ae8e8380d

SHA512
e3737d85c8ecb2ceb47ee6dc6505f38f4a4b467780fabf0bb179f35175264b1b4114fd9e368af186b774500cc9d67fc5919c1b90d6c0f377a7a2b3de09d69c52

Download Submit
\Users\Public\vbc.exe
MD5
c343b0f63b6c4dc9d3f5dd7864f6edd6

SHA1
d28b97bb29685705b0b38f3d955a0ddb33b414dc

SHA256
c58e2d245f99b53a5d4006c4f1daac8085b622eeab9958a576e7b82ae8e8380d

SHA512
e3737d85c8ecb2ceb47ee6dc6505f38f4a4b467780fabf0bb179f35175264b1b4114fd9e368af186b774500cc9d67fc5919c1b90d6c0f377a7a2b3de09d69c52

Download Submit
memory/396-20-0x0000000000000000-mapping.dmp

Download
memory/788-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/788-16-0x000000000041EB60-mapping.dmp

Download
memory/1740-2-0x000007FEF6930000-0x000007FEF6BAA000-memory.dmp

Filesize
2.5MB

Download
memory/1940-11-0x0000000000CF0000-0x0000000000CF1000-memory.dmp

Filesize
4KB

Download
memory/1940-13-0x0000000000460000-0x000000000046E000-memory.dmp

Filesize
56KB

Download
memory/1940-14-0x0000000004860000-0x00000000048AB000-memory.dmp

Filesize
300KB

Download
memory/1940-10-0x000000006CC80000-0x000000006D36E000-memory.dmp

Filesize
6.9MB

Download
memory/1940-7-0x0000000000000000-mapping.dmp

Download
memory/2000-18-0x0000000000000000-mapping.dmp

Download
memory/2000-19-0x0000000000960000-0x0000000000986000-memory.dmp

Filesize
152KB

Download
memory/2000-21-0x0000000003140000-0x0000000003288000-memory.dmp

Filesize
1.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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