formbook | 362bf939fb73269fe4298d695eceb9dd95161f6346b75fcf1b756010903d05d3

General

Target

MV. WBC TBN 1._PARTICULARS.exe
Size

429KB
MD5

f9ab0dee05ae6ec17cc0d971213ff477
SHA1

11b0ca2284db669e655624bbdf06c96bbc21e989
SHA256

362bf939fb73269fe4298d695eceb9dd95161f6346b75fcf1b756010903d05d3
SHA512

13b37c3c6f765ab4c6d974a33d471aa2274d73fc9f07c0055dc5fa7bda502f8a9d9568f8ec95043b9578e7c2abfab9dcfed6d32ccd842183ce9be2ee3a2fd7f1
SSDEEP

6144:ooqVyigXq1rRPYU4VSyv4IAXp9il7kDnobvh6JvH9ASHjOXUBMFsR:6Vy2fPOOpANGUh2vH9AfEBMY

Score

10^/10

formbook ermr persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

ermr

Decoy

ErOK6LFCgNIAlQmH54oaYOL/CN29Z78=

qNSdDhu/PT/1fgafDagiCSZH1SY=

wLpPOAkYS8EABl3pHGc4hNT/Q1sHBrU=

jSxRvptHkeTGl7PT0SEmaZmjqzanuA==

b91oL+2wCcpyhnd6yvF6Pg==

mr81yp1/qqZX

hy7Xsz/PU/LWHMcGL4UYJx9n3A==

KlwrHt1gouPaXaWhoQ==

ng8M320IRJL9Ptw=

8GQbOXuaWxvKnNM=

XndOL7E5sNpVUNty4d/a

rryPBBC8PybYb+2h2MF3FHGL

kEoeyERSVCYO0g==

5/P+SBDby5hO

1fYXc30/h9W7iO17

34X+YKR+wRFE

8ir/X2MlVByh5lQ1ow8=

u9ikm2UMZ7J7hpCYow==

FLI+c3clp1BNDjVAfvC2Dnw=

t21Erq8/r09wAzAJTAH3Ng==

Signatures

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

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DFYLP = "C:\\Program Files (x86)\\Ygfyljfwp\\vga6l6hzln8.exe"	msiexec.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	msiexec.exe

Blocklisted process makes network request 2 IoCs

Processes:

msiexec.exe

flow pid process

12 1284 msiexec.exe
24 1284 msiexec.exe

flow	pid	process
12	1284	msiexec.exe
24	1284	msiexec.exe

Checks computer location settings 2 TTPs 1 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

MV. WBC TBN 1._PARTICULARS.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3845472200-3839195424-595303356-1000\Control Panel\International\Geo\Nation	MV. WBC TBN 1._PARTICULARS.exe

Deletes itself 1 IoCs

Processes:

cmd.exe

pid process

2036 cmd.exe

pid	process
2036	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

MV. WBC TBN 1._PARTICULARS.exeMV. WBC TBN 1._PARTICULARS.exemsiexec.exe

description	pid	process	target process
PID 1044 set thread context of 2024	1044	MV. WBC TBN 1._PARTICULARS.exe	MV. WBC TBN 1._PARTICULARS.exe
PID 2024 set thread context of 1268	2024	MV. WBC TBN 1._PARTICULARS.exe	Explorer.EXE
PID 1284 set thread context of 1268	1284	msiexec.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

msiexec.exe

description ioc process

File opened for modification C:\Program Files (x86)\Ygfyljfwp\vga6l6hzln8.exe msiexec.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Ygfyljfwp\vga6l6hzln8.exe	msiexec.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	msiexec.exe

Suspicious behavior: EnumeratesProcesses 24 IoCs

Processes:

MV. WBC TBN 1._PARTICULARS.exemsiexec.exe

pid	process
2024	MV. WBC TBN 1._PARTICULARS.exe
2024	MV. WBC TBN 1._PARTICULARS.exe
2024	MV. WBC TBN 1._PARTICULARS.exe
2024	MV. WBC TBN 1._PARTICULARS.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

MV. WBC TBN 1._PARTICULARS.exemsiexec.exe

pid	process
2024	MV. WBC TBN 1._PARTICULARS.exe
2024	MV. WBC TBN 1._PARTICULARS.exe
2024	MV. WBC TBN 1._PARTICULARS.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe
1284	msiexec.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

MV. WBC TBN 1._PARTICULARS.exeMV. WBC TBN 1._PARTICULARS.exemsiexec.exe

description	pid	process
Token: SeDebugPrivilege	1044	MV. WBC TBN 1._PARTICULARS.exe
Token: SeDebugPrivilege	2024	MV. WBC TBN 1._PARTICULARS.exe
Token: SeDebugPrivilege	1284	msiexec.exe

Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

MV. WBC TBN 1._PARTICULARS.exeExplorer.EXEmsiexec.exe

description	pid	process	target process
PID 1044 wrote to memory of 2024	1044	MV. WBC TBN 1._PARTICULARS.exe	MV. WBC TBN 1._PARTICULARS.exe
PID 1044 wrote to memory of 2024	1044	MV. WBC TBN 1._PARTICULARS.exe	MV. WBC TBN 1._PARTICULARS.exe
PID 1044 wrote to memory of 2024	1044	MV. WBC TBN 1._PARTICULARS.exe	MV. WBC TBN 1._PARTICULARS.exe
PID 1044 wrote to memory of 2024	1044	MV. WBC TBN 1._PARTICULARS.exe	MV. WBC TBN 1._PARTICULARS.exe
PID 1044 wrote to memory of 2024	1044	MV. WBC TBN 1._PARTICULARS.exe	MV. WBC TBN 1._PARTICULARS.exe
PID 1044 wrote to memory of 2024	1044	MV. WBC TBN 1._PARTICULARS.exe	MV. WBC TBN 1._PARTICULARS.exe
PID 1044 wrote to memory of 2024	1044	MV. WBC TBN 1._PARTICULARS.exe	MV. WBC TBN 1._PARTICULARS.exe
PID 1268 wrote to memory of 1284	1268	Explorer.EXE	msiexec.exe
PID 1268 wrote to memory of 1284	1268	Explorer.EXE	msiexec.exe
PID 1268 wrote to memory of 1284	1268	Explorer.EXE	msiexec.exe
PID 1268 wrote to memory of 1284	1268	Explorer.EXE	msiexec.exe
PID 1268 wrote to memory of 1284	1268	Explorer.EXE	msiexec.exe
PID 1268 wrote to memory of 1284	1268	Explorer.EXE	msiexec.exe
PID 1268 wrote to memory of 1284	1268	Explorer.EXE	msiexec.exe
PID 1284 wrote to memory of 2036	1284	msiexec.exe	cmd.exe
PID 1284 wrote to memory of 2036	1284	msiexec.exe	cmd.exe
PID 1284 wrote to memory of 2036	1284	msiexec.exe	cmd.exe
PID 1284 wrote to memory of 2036	1284	msiexec.exe	cmd.exe
PID 1284 wrote to memory of 844	1284	msiexec.exe	Firefox.exe
PID 1284 wrote to memory of 844	1284	msiexec.exe	Firefox.exe
PID 1284 wrote to memory of 844	1284	msiexec.exe	Firefox.exe
PID 1284 wrote to memory of 844	1284	msiexec.exe	Firefox.exe
PID 1284 wrote to memory of 844	1284	msiexec.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1268

C:\Users\Admin\AppData\Local\Temp\MV. WBC TBN 1._PARTICULARS.exe
"C:\Users\Admin\AppData\Local\Temp\MV. WBC TBN 1._PARTICULARS.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1044

C:\Users\Admin\AppData\Local\Temp\MV. WBC TBN 1._PARTICULARS.exe
"C:\Users\Admin\AppData\Local\Temp\MV. WBC TBN 1._PARTICULARS.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2024

C:\Windows\SysWOW64\msiexec.exe
"C:\Windows\SysWOW64\msiexec.exe"
2⤵
- Adds policy Run key to start application
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1284

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\MV. WBC TBN 1._PARTICULARS.exe"
3⤵
- Deletes itself
PID:2036

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:844

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

memory/1044-55-0x0000000075071000-0x0000000075073000-memory.dmp

Filesize
8KB

Download
memory/1044-54-0x00000000013C0000-0x0000000001430000-memory.dmp

Filesize
448KB

Download
memory/1268-75-0x0000000004FB0000-0x000000000509D000-memory.dmp

Filesize
948KB

Download
memory/1268-73-0x0000000004FB0000-0x000000000509D000-memory.dmp

Filesize
948KB

Download
memory/1268-65-0x0000000004120000-0x00000000041F7000-memory.dmp

Filesize
860KB

Download
memory/1284-69-0x0000000000AA0000-0x0000000000AB4000-memory.dmp

Filesize
80KB

Download
memory/1284-74-0x0000000000090000-0x00000000000BD000-memory.dmp

Filesize
180KB

Download
memory/1284-72-0x0000000000480000-0x0000000000510000-memory.dmp

Filesize
576KB

Download
memory/1284-71-0x0000000002290000-0x0000000002593000-memory.dmp

Filesize
3.0MB

Download
memory/1284-70-0x0000000000090000-0x00000000000BD000-memory.dmp

Filesize
180KB

Download
memory/1284-66-0x0000000000000000-mapping.dmp

Download
memory/2024-59-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2024-63-0x0000000000970000-0x0000000000C73000-memory.dmp

Filesize
3.0MB

Download
memory/2024-64-0x0000000000140000-0x0000000000151000-memory.dmp

Filesize
68KB

Download
memory/2024-62-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2024-60-0x0000000000420330-mapping.dmp

Download
memory/2024-57-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2024-56-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/2036-68-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads