formbook | 9f505c683b52a195879f9836e49009f89ea1caa957327edad4b79316f72540c9

General

Target

TT Payment - 105,272.40.xlsx
Size

1.9MB
MD5

eaeea812b9d9bcb9aa3373449e869411
SHA1

4da441a80229eb466c232a0a1d05aa5a0cf7ea21
SHA256

9f505c683b52a195879f9836e49009f89ea1caa957327edad4b79316f72540c9
SHA512

d5806799f7c84a570d39ec82077b4bd2f2286d9a98e4515aa20e4b4faf91b23b1e489aa1db4ce1739ca463ce7fa1b16da7064e7d06e8fde212fb5e95c1eaae7d

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/1580-20-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/1580-21-0x000000000041EB60-mapping.dmp	formbook
behavioral1/memory/848-30-0x0000000000080000-0x00000000000AE000-memory.dmp	formbook

Blocklisted process makes network request 1 IoCs

Processes:

EQNEDT32.EXE

flow pid process

6 1248 EQNEDT32.EXE
Executes dropped EXE 2 IoCs

Processes:

vbc.exevbc.exe

pid process

388 vbc.exe
1580 vbc.exe
Loads dropped DLL 4 IoCs

Processes:

EQNEDT32.EXE

pid process

1248 EQNEDT32.EXE
1248 EQNEDT32.EXE
1248 EQNEDT32.EXE
1248 EQNEDT32.EXE
Uses the VBS compiler for execution 1 TTPs

Scripting
T1064

flow	pid	process
6	1248	EQNEDT32.EXE

pid	process
388	vbc.exe
1580	vbc.exe

pid	process
1248	EQNEDT32.EXE
1248	EQNEDT32.EXE
1248	EQNEDT32.EXE
1248	EQNEDT32.EXE

Suspicious use of SetThreadContext 3 IoCs

Processes:

vbc.exevbc.exeNAPSTAT.EXE

description	pid	process	target process
PID 388 set thread context of 1580	388	vbc.exe	vbc.exe
PID 1580 set thread context of 1252	1580	vbc.exe	Explorer.EXE
PID 848 set thread context of 1252	848	NAPSTAT.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

1248 EQNEDT32.EXE

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

pid	process
1248	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-1-5-21-293278959-2699126792-324916226-1000\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
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\MenuExt\E&xport to Microsoft Excel	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
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\Toolbar	EXCEL.EXE
Key created	\REGISTRY\USER\S-1-5-21-293278959-2699126792-324916226-1000\Software\Microsoft\Internet Explorer\MenuExt	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

Suspicious behavior: AddClipboardFormatListener 1 IoCs

Processes:

EXCEL.EXE

pid process

1096 EXCEL.EXE

pid	process
1096	EXCEL.EXE

Suspicious behavior: EnumeratesProcesses 20 IoCs

Processes:

vbc.exeNAPSTAT.EXE

pid	process
1580	vbc.exe
1580	vbc.exe
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE
848	NAPSTAT.EXE

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

vbc.exeNAPSTAT.EXE

pid process

1580 vbc.exe
1580 vbc.exe
1580 vbc.exe
848 NAPSTAT.EXE
848 NAPSTAT.EXE
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

vbc.exeNAPSTAT.EXE

description pid process

Token: SeDebugPrivilege 1580 vbc.exe
Token: SeDebugPrivilege 848 NAPSTAT.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 3 IoCs

Processes:

EXCEL.EXE

pid process

1096 EXCEL.EXE
1096 EXCEL.EXE
1096 EXCEL.EXE

description	pid	process
Token: SeDebugPrivilege	1580	vbc.exe
Token: SeDebugPrivilege	848	NAPSTAT.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
1096	EXCEL.EXE
1096	EXCEL.EXE
1096	EXCEL.EXE

Suspicious use of WriteProcessMemory 19 IoCs

Processes:

EQNEDT32.EXEvbc.exeExplorer.EXENAPSTAT.EXE

description	pid	process	target process
PID 1248 wrote to memory of 388	1248	EQNEDT32.EXE	vbc.exe
PID 1248 wrote to memory of 388	1248	EQNEDT32.EXE	vbc.exe
PID 1248 wrote to memory of 388	1248	EQNEDT32.EXE	vbc.exe
PID 1248 wrote to memory of 388	1248	EQNEDT32.EXE	vbc.exe
PID 388 wrote to memory of 1580	388	vbc.exe	vbc.exe
PID 388 wrote to memory of 1580	388	vbc.exe	vbc.exe
PID 388 wrote to memory of 1580	388	vbc.exe	vbc.exe
PID 388 wrote to memory of 1580	388	vbc.exe	vbc.exe
PID 388 wrote to memory of 1580	388	vbc.exe	vbc.exe
PID 388 wrote to memory of 1580	388	vbc.exe	vbc.exe
PID 388 wrote to memory of 1580	388	vbc.exe	vbc.exe
PID 1252 wrote to memory of 848	1252	Explorer.EXE	NAPSTAT.EXE
PID 1252 wrote to memory of 848	1252	Explorer.EXE	NAPSTAT.EXE
PID 1252 wrote to memory of 848	1252	Explorer.EXE	NAPSTAT.EXE
PID 1252 wrote to memory of 848	1252	Explorer.EXE	NAPSTAT.EXE
PID 848 wrote to memory of 1004	848	NAPSTAT.EXE	cmd.exe
PID 848 wrote to memory of 1004	848	NAPSTAT.EXE	cmd.exe
PID 848 wrote to memory of 1004	848	NAPSTAT.EXE	cmd.exe
PID 848 wrote to memory of 1004	848	NAPSTAT.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: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\TT Payment - 105,272.40.xlsx"
2⤵
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of SetWindowsHookEx
PID:1096

C:\Windows\SysWOW64\NAPSTAT.EXE
"C:\Windows\SysWOW64\NAPSTAT.EXE"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:848

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Public\vbc.exe"
3⤵
PID:1004

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:1248

C:\Users\Public\vbc.exe
"C:\Users\Public\vbc.exe"
2⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:388

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:1580

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

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Public\vbc.exe
MD5
d4982ab3c53ad21f2b1b96f7ae8042d4

SHA1
0ecf9f1ab5b44da05a2a39bcb5b397c4ef1343ea

SHA256
cf18069218b5b834227fa33133f629f24be9c582eeb0caaf0d7641520b1d9748

SHA512
2cfdc207d9fc5c22ba420b06bc36fbf3aca4e9b33eb3722bff639c5631445f4c600f66b272b30a7023cb84f46997a7d73fb9a3f7bba8fb00dc88347bb10f5bb2

Download Submit
C:\Users\Public\vbc.exe
MD5
d4982ab3c53ad21f2b1b96f7ae8042d4

SHA1
0ecf9f1ab5b44da05a2a39bcb5b397c4ef1343ea

SHA256
cf18069218b5b834227fa33133f629f24be9c582eeb0caaf0d7641520b1d9748

SHA512
2cfdc207d9fc5c22ba420b06bc36fbf3aca4e9b33eb3722bff639c5631445f4c600f66b272b30a7023cb84f46997a7d73fb9a3f7bba8fb00dc88347bb10f5bb2

Download Submit
C:\Users\Public\vbc.exe
MD5
d4982ab3c53ad21f2b1b96f7ae8042d4

SHA1
0ecf9f1ab5b44da05a2a39bcb5b397c4ef1343ea

SHA256
cf18069218b5b834227fa33133f629f24be9c582eeb0caaf0d7641520b1d9748

SHA512
2cfdc207d9fc5c22ba420b06bc36fbf3aca4e9b33eb3722bff639c5631445f4c600f66b272b30a7023cb84f46997a7d73fb9a3f7bba8fb00dc88347bb10f5bb2

Download Submit
\Users\Public\vbc.exe
MD5
d4982ab3c53ad21f2b1b96f7ae8042d4

SHA1
0ecf9f1ab5b44da05a2a39bcb5b397c4ef1343ea

SHA256
cf18069218b5b834227fa33133f629f24be9c582eeb0caaf0d7641520b1d9748

SHA512
2cfdc207d9fc5c22ba420b06bc36fbf3aca4e9b33eb3722bff639c5631445f4c600f66b272b30a7023cb84f46997a7d73fb9a3f7bba8fb00dc88347bb10f5bb2

Download Submit
\Users\Public\vbc.exe
MD5
d4982ab3c53ad21f2b1b96f7ae8042d4

SHA1
0ecf9f1ab5b44da05a2a39bcb5b397c4ef1343ea

SHA256
cf18069218b5b834227fa33133f629f24be9c582eeb0caaf0d7641520b1d9748

SHA512
2cfdc207d9fc5c22ba420b06bc36fbf3aca4e9b33eb3722bff639c5631445f4c600f66b272b30a7023cb84f46997a7d73fb9a3f7bba8fb00dc88347bb10f5bb2

Download Submit
\Users\Public\vbc.exe
MD5
d4982ab3c53ad21f2b1b96f7ae8042d4

SHA1
0ecf9f1ab5b44da05a2a39bcb5b397c4ef1343ea

SHA256
cf18069218b5b834227fa33133f629f24be9c582eeb0caaf0d7641520b1d9748

SHA512
2cfdc207d9fc5c22ba420b06bc36fbf3aca4e9b33eb3722bff639c5631445f4c600f66b272b30a7023cb84f46997a7d73fb9a3f7bba8fb00dc88347bb10f5bb2

Download Submit
\Users\Public\vbc.exe
MD5
d4982ab3c53ad21f2b1b96f7ae8042d4

SHA1
0ecf9f1ab5b44da05a2a39bcb5b397c4ef1343ea

SHA256
cf18069218b5b834227fa33133f629f24be9c582eeb0caaf0d7641520b1d9748

SHA512
2cfdc207d9fc5c22ba420b06bc36fbf3aca4e9b33eb3722bff639c5631445f4c600f66b272b30a7023cb84f46997a7d73fb9a3f7bba8fb00dc88347bb10f5bb2

Download Submit
memory/388-17-0x0000000004DA0000-0x0000000004DA1000-memory.dmp

Filesize
4KB

Download
memory/388-15-0x0000000000110000-0x0000000000111000-memory.dmp

Filesize
4KB

Download
memory/388-11-0x0000000000000000-mapping.dmp

Download
memory/388-19-0x0000000004F70000-0x0000000004FCD000-memory.dmp

Filesize
372KB

Download
memory/388-18-0x00000000004A0000-0x00000000004AE000-memory.dmp

Filesize
56KB

Download
memory/388-14-0x000000006BA10000-0x000000006C0FE000-memory.dmp

Filesize
6.9MB

Download
memory/848-27-0x0000000000000000-mapping.dmp

Download
memory/848-32-0x0000000001EF0000-0x0000000001F83000-memory.dmp

Filesize
588KB

Download
memory/848-29-0x0000000000770000-0x00000000007B6000-memory.dmp

Filesize
280KB

Download
memory/848-31-0x0000000002020000-0x0000000002323000-memory.dmp

Filesize
3.0MB

Download
memory/848-30-0x0000000000080000-0x00000000000AE000-memory.dmp

Filesize
184KB

Download
memory/1004-28-0x0000000000000000-mapping.dmp

Download
memory/1096-4-0x000000005FFF0000-0x0000000060000000-memory.dmp

Filesize
64KB

Download
memory/1096-3-0x0000000071461000-0x0000000071463000-memory.dmp

Filesize
8KB

Download
memory/1096-2-0x000000002F7A1000-0x000000002F7A4000-memory.dmp

Filesize
12KB

Download
memory/1248-5-0x0000000075301000-0x0000000075303000-memory.dmp

Filesize
8KB

Download
memory/1252-26-0x00000000040D0000-0x000000000419D000-memory.dmp

Filesize
820KB

Download
memory/1252-33-0x0000000006460000-0x0000000006529000-memory.dmp

Filesize
804KB

Download
memory/1452-6-0x000007FEF7500000-0x000007FEF777A000-memory.dmp

Filesize
2.5MB

Download
memory/1580-25-0x0000000000280000-0x0000000000294000-memory.dmp

Filesize
80KB

Download
memory/1580-24-0x00000000009A0000-0x0000000000CA3000-memory.dmp

Filesize
3.0MB

Download
memory/1580-21-0x000000000041EB60-mapping.dmp

Download
memory/1580-20-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

Loading Replay Monitor...

Downloads