formbook | 3702b6cfa76e492d56bd9da5f99f7ff805e32c16b3840ee66bb13a812f5d3155

General

Target

CSA73881.exe
Size

2.1MB
MD5

3ed3236517a40602d654555bc912d926
SHA1

16dc042b543fe473703e711844f508d353d6d6af
SHA256

3702b6cfa76e492d56bd9da5f99f7ff805e32c16b3840ee66bb13a812f5d3155
SHA512

05c6c1d72929e8221522452ce757467a05b07a6e6a8a85ef6f0f16f8dc052068fdb54636f8526dd0eeea7c9fe743dcc4eba6fb84f36cc4a3bbc82b7d057f93d2

Score

10^/10

formbook mh76 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

mh76

Decoy

healthgovcalottery.net

wenxinliao.com

rooterphd.com

bbobbo.one

american-mes-de-dezembro.xyz

mintager.com

thespecialtstore.com

wemakegreenhomes.com

occurandmental.xyz

fidelityrealtytitle.com

numerisat.asia

wearestallions.com

supxl.com

rajacumi.com

renaziv.online

blixtindustries.com

fjljq.com

exploretrivenicamping.com

authenticusspa.com

uucloud.press

Signatures

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

Formbook payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/1988-60-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/1988-61-0x000000000041F1A0-mapping.dmp	formbook
behavioral1/memory/1988-63-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2012-71-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook
behavioral1/memory/2012-75-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Suspicious use of SetThreadContext 3 IoCs

Processes:

CSA73881.exeInstallUtil.exemsdt.exe

description	pid	process	target process
PID 772 set thread context of 1988	772	CSA73881.exe	InstallUtil.exe
PID 1988 set thread context of 1268	1988	InstallUtil.exe	Explorer.EXE
PID 2012 set thread context of 1268	2012	msdt.exe	Explorer.EXE

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

CSA73881.exeInstallUtil.exemsdt.exe

pid	process
772	CSA73881.exe
1988	InstallUtil.exe
1988	InstallUtil.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe
2012	msdt.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

InstallUtil.exemsdt.exe

pid process

1988 InstallUtil.exe
1988 InstallUtil.exe
1988 InstallUtil.exe
2012 msdt.exe
2012 msdt.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

CSA73881.exeInstallUtil.exemsdt.exe

description pid process

Token: SeDebugPrivilege 772 CSA73881.exe
Token: SeDebugPrivilege 1988 InstallUtil.exe
Token: SeDebugPrivilege 2012 msdt.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
1988	InstallUtil.exe
1988	InstallUtil.exe
1988	InstallUtil.exe
2012	msdt.exe
2012	msdt.exe

description	pid	process
Token: SeDebugPrivilege	772	CSA73881.exe
Token: SeDebugPrivilege	1988	InstallUtil.exe
Token: SeDebugPrivilege	2012	msdt.exe

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

CSA73881.exeExplorer.EXEmsdt.exe

description	pid	process	target process
PID 772 wrote to memory of 1988	772	CSA73881.exe	InstallUtil.exe
PID 772 wrote to memory of 1988	772	CSA73881.exe	InstallUtil.exe
PID 772 wrote to memory of 1988	772	CSA73881.exe	InstallUtil.exe
PID 772 wrote to memory of 1988	772	CSA73881.exe	InstallUtil.exe
PID 772 wrote to memory of 1988	772	CSA73881.exe	InstallUtil.exe
PID 772 wrote to memory of 1988	772	CSA73881.exe	InstallUtil.exe
PID 772 wrote to memory of 1988	772	CSA73881.exe	InstallUtil.exe
PID 772 wrote to memory of 1988	772	CSA73881.exe	InstallUtil.exe
PID 772 wrote to memory of 1988	772	CSA73881.exe	InstallUtil.exe
PID 772 wrote to memory of 1988	772	CSA73881.exe	InstallUtil.exe
PID 1268 wrote to memory of 2012	1268	Explorer.EXE	msdt.exe
PID 1268 wrote to memory of 2012	1268	Explorer.EXE	msdt.exe
PID 1268 wrote to memory of 2012	1268	Explorer.EXE	msdt.exe
PID 1268 wrote to memory of 2012	1268	Explorer.EXE	msdt.exe
PID 2012 wrote to memory of 1592	2012	msdt.exe	cmd.exe
PID 2012 wrote to memory of 1592	2012	msdt.exe	cmd.exe
PID 2012 wrote to memory of 1592	2012	msdt.exe	cmd.exe
PID 2012 wrote to memory of 1592	2012	msdt.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:1268

C:\Users\Admin\AppData\Local\Temp\CSA73881.exe
"C:\Users\Admin\AppData\Local\Temp\CSA73881.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:772

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:1988

C:\Windows\SysWOW64\msdt.exe
"C:\Windows\SysWOW64\msdt.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2012

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\InstallUtil.exe"
3⤵
PID:1592

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads

memory/772-55-0x0000000075481000-0x0000000075483000-memory.dmp

Filesize
8KB

Download
memory/772-56-0x000000000BC90000-0x000000000BEAA000-memory.dmp

Filesize
2.1MB

Download
memory/772-54-0x0000000000B10000-0x0000000000D2C000-memory.dmp

Filesize
2.1MB

Download
memory/1268-66-0x0000000006D80000-0x0000000006ED9000-memory.dmp

Filesize
1.3MB

Download
memory/1268-76-0x0000000006EE0000-0x000000000704D000-memory.dmp

Filesize
1.4MB

Download
memory/1268-74-0x0000000006EE0000-0x000000000704D000-memory.dmp

Filesize
1.4MB

Download
memory/1592-69-0x0000000000000000-mapping.dmp

Download
memory/1988-60-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1988-64-0x00000000008A0000-0x0000000000BA3000-memory.dmp

Filesize
3.0MB

Download
memory/1988-65-0x0000000000190000-0x00000000001A5000-memory.dmp

Filesize
84KB

Download
memory/1988-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1988-61-0x000000000041F1A0-mapping.dmp

Download
memory/1988-58-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1988-57-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2012-67-0x0000000000000000-mapping.dmp

Download
memory/2012-70-0x0000000000C00000-0x0000000000CF4000-memory.dmp

Filesize
976KB

Download
memory/2012-71-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2012-72-0x00000000022D0000-0x00000000025D3000-memory.dmp

Filesize
3.0MB

Download
memory/2012-73-0x0000000000A10000-0x0000000000AA4000-memory.dmp

Filesize
592KB

Download
memory/2012-75-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix

Replay Monitor

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Downloads