formbook | 1734985df87235e747cf465d2d8d192f609275a7193a723764c8654b47357083

General

Target

SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe
Size

673KB
MD5

e7ac037813e0f4fa8d32974a542a2d08
SHA1

093356469b8932c6168e43d427127d7ed5b56af4
SHA256

1734985df87235e747cf465d2d8d192f609275a7193a723764c8654b47357083
SHA512

e0fe51b1c332d763318cfcb486280d6c7af34486d01dbec9b8b994bf7a69270194ad243299f01788f5781ae5fbe99575dc89bd126d90abac27c186efee14ee33
SSDEEP

12288:xZNfbYhbXbqhf/groDmU2md5mq6yCCDEa4RUOyV0eeoWtO6TGhAh:HNfqbXbqhf/ioDmXgmq6yYaAgOeeoWt/

Score

10^/10

formbook ctap rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

ctap

Decoy

7fuiHU5O7pBugItrXtDlRbQzVNAypQ==

Ioe4Ezkvrkk5SljtGsXC

7SdYmzWqxYzoB10eYg==

87z12VKpqmy0nXHtGsXC

frPRoZR38nhTXl/tGsXC

JybcU3xwAWn21yEPd4XnKA==

B6LTKeV3SeQZAg==

9iFOJSEVtE+I6ea4tn6M72ANGm3K

bROuHdVCVl63QIZuI2etey+ugP0=

25FDh/Be3fhaReK+BwZm9aY+og==

ipYbazKawI7oB10eYg==

Y3ONgI2GHcStmm5WhEZCsE/GlNJovg==

NMjp1U2zzpPoB10eYg==

ZZOygHxoGkBxNTz1RnI=

Hy1dkswBcyQh

94qXZbB1+8ciD4Q=

JUhyQ8Fxl+4gBA==

7wuj4eTJFutgR7+k1R8mIA==

Nj3QJ1RBulY2AMS/1R8mIA==

LjFXk8zI5vgdq8N6ropiNA==

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Blocklisted process makes network request 2 IoCs

Processes:

cmstp.exe

flow pid process

9 760 cmstp.exe
13 760 cmstp.exe
Loads dropped DLL 1 IoCs

Processes:

cmstp.exe

pid process

760 cmstp.exe
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

flow	pid	process
9	760	cmstp.exe
13	760	cmstp.exe

pid	process
760	cmstp.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exeRegsvcs.execmstp.exe

description	pid	process	target process
PID 1716 set thread context of 2012	1716	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 2012 set thread context of 1224	2012	Regsvcs.exe	Explorer.EXE
PID 760 set thread context of 1224	760	cmstp.exe	Explorer.EXE

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmstp.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-4063495947-34355257-727531523-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 28 IoCs

Processes:

Regsvcs.execmstp.exe

pid	process
2012	Regsvcs.exe
2012	Regsvcs.exe
2012	Regsvcs.exe
2012	Regsvcs.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe
760	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1224 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

Regsvcs.execmstp.exe

pid process

2012 Regsvcs.exe
2012 Regsvcs.exe
2012 Regsvcs.exe
760 cmstp.exe
760 cmstp.exe
760 cmstp.exe
760 cmstp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Regsvcs.execmstp.exe

description pid process

Token: SeDebugPrivilege 2012 Regsvcs.exe
Token: SeDebugPrivilege 760 cmstp.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1224 Explorer.EXE
1224 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1224 Explorer.EXE
1224 Explorer.EXE

pid	process
1224	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	2012	Regsvcs.exe
Token: SeDebugPrivilege	760	cmstp.exe

pid	process
1224	Explorer.EXE
1224	Explorer.EXE

pid	process
1224	Explorer.EXE
1224	Explorer.EXE

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 1716 wrote to memory of 2012	1716	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1716 wrote to memory of 2012	1716	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1716 wrote to memory of 2012	1716	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1716 wrote to memory of 2012	1716	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1716 wrote to memory of 2012	1716	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1716 wrote to memory of 2012	1716	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1716 wrote to memory of 2012	1716	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1716 wrote to memory of 2012	1716	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1716 wrote to memory of 2012	1716	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1716 wrote to memory of 2012	1716	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1224 wrote to memory of 760	1224	Explorer.EXE	cmstp.exe
PID 1224 wrote to memory of 760	1224	Explorer.EXE	cmstp.exe
PID 1224 wrote to memory of 760	1224	Explorer.EXE	cmstp.exe
PID 1224 wrote to memory of 760	1224	Explorer.EXE	cmstp.exe
PID 1224 wrote to memory of 760	1224	Explorer.EXE	cmstp.exe
PID 1224 wrote to memory of 760	1224	Explorer.EXE	cmstp.exe
PID 1224 wrote to memory of 760	1224	Explorer.EXE	cmstp.exe
PID 760 wrote to memory of 1676	760	cmstp.exe	Firefox.exe
PID 760 wrote to memory of 1676	760	cmstp.exe	Firefox.exe
PID 760 wrote to memory of 1676	760	cmstp.exe	Firefox.exe
PID 760 wrote to memory of 1676	760	cmstp.exe	Firefox.exe
PID 760 wrote to memory of 1676	760	cmstp.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1224

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:1716

C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\Regsvcs.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2012

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
2⤵
- Blocklisted process makes network request
- Loads dropped DLL
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:760

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1676

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

\Users\Admin\AppData\Local\Temp\sqlite3.dll
Filesize
904KB

MD5
5e5ba61531d74e45b11cadb79e7394a1

SHA1
677224e14aac9dd35f367d5eb1704b36e69356b8

SHA256
99e91ae250c955bd403ec1a2321d6b11fcb715bdcc7cb3f63ffb46b349afde5c

SHA512
712bfe419ba97ecf0ec8323a68743013e8c767da9d986f74ab94d2a395c3086cac2a5823048e0022d3bbcebb55281b9e1f8c87fdc9295c70cc5521b57850bf46

Download Submit
memory/760-68-0x0000000000000000-mapping.dmp

Download
memory/760-75-0x00000000003C0000-0x000000000044F000-memory.dmp

Filesize
572KB

Download
memory/760-74-0x0000000002260000-0x0000000002563000-memory.dmp

Filesize
3.0MB

Download
memory/760-73-0x00000000000D0000-0x00000000000FD000-memory.dmp

Filesize
180KB

Download
memory/760-72-0x0000000000E40000-0x0000000000E58000-memory.dmp

Filesize
96KB

Download
memory/760-71-0x00000000765B1000-0x00000000765B3000-memory.dmp

Filesize
8KB

Download
memory/1224-67-0x0000000004A80000-0x0000000004BC3000-memory.dmp

Filesize
1.3MB

Download
memory/1224-76-0x0000000004BD0000-0x0000000004D45000-memory.dmp

Filesize
1.5MB

Download
memory/1224-77-0x0000000004BD0000-0x0000000004D45000-memory.dmp

Filesize
1.5MB

Download
memory/1716-55-0x0000000000350000-0x000000000035A000-memory.dmp

Filesize
40KB

Download
memory/1716-54-0x0000000000DB0000-0x0000000000E5E000-memory.dmp

Filesize
696KB

Download
memory/2012-62-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2012-70-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2012-64-0x0000000000810000-0x0000000000B13000-memory.dmp

Filesize
3.0MB

Download
memory/2012-60-0x00000000004012B0-mapping.dmp

Download
memory/2012-59-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2012-56-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2012-69-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2012-57-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2012-63-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2012-66-0x0000000000090000-0x00000000000A0000-memory.dmp

Filesize
64KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads