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

27 5096 cmstp.exe
58 5096 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
27	5096	cmstp.exe
58	5096	cmstp.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

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

description	pid	process	target process
PID 1136 set thread context of 3516	1136	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 3516 set thread context of 1040	3516	Regsvcs.exe	Explorer.EXE
PID 3516 set thread context of 1040	3516	Regsvcs.exe	Explorer.EXE
PID 5096 set thread context of 1040	5096	cmstp.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmstp.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

Regsvcs.execmstp.exe

pid	process
3516	Regsvcs.exe
3516	Regsvcs.exe
3516	Regsvcs.exe
3516	Regsvcs.exe
3516	Regsvcs.exe
3516	Regsvcs.exe
3516	Regsvcs.exe
3516	Regsvcs.exe
3516	Regsvcs.exe
3516	Regsvcs.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe
5096	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1040 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

Regsvcs.execmstp.exe

pid process

3516 Regsvcs.exe
3516 Regsvcs.exe
3516 Regsvcs.exe
3516 Regsvcs.exe
5096 cmstp.exe
5096 cmstp.exe
5096 cmstp.exe
5096 cmstp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

Regsvcs.execmstp.exe

description pid process

Token: SeDebugPrivilege 3516 Regsvcs.exe
Token: SeDebugPrivilege 5096 cmstp.exe

pid	process
1040	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	3516	Regsvcs.exe
Token: SeDebugPrivilege	5096	cmstp.exe

Suspicious use of WriteProcessMemory 12 IoCs

Processes:

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

description	pid	process	target process
PID 1136 wrote to memory of 3516	1136	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1136 wrote to memory of 3516	1136	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1136 wrote to memory of 3516	1136	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1136 wrote to memory of 3516	1136	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1136 wrote to memory of 3516	1136	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1136 wrote to memory of 3516	1136	SecuriteInfo.com.Trojan.DownloaderNET.345.13381.27886.exe	Regsvcs.exe
PID 1040 wrote to memory of 5096	1040	Explorer.EXE	cmstp.exe
PID 1040 wrote to memory of 5096	1040	Explorer.EXE	cmstp.exe
PID 1040 wrote to memory of 5096	1040	Explorer.EXE	cmstp.exe
PID 5096 wrote to memory of 1584	5096	cmstp.exe	Firefox.exe
PID 5096 wrote to memory of 1584	5096	cmstp.exe	Firefox.exe
PID 5096 wrote to memory of 1584	5096	cmstp.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1040
- 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:1136
- - 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:3516
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Blocklisted process makes network request
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:5096
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1584

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

Lateral Movement

Collection

Data from Local System

1

T1005

Command and Control

Exfiltration

Impact

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Downloads

memory/1040-142-0x0000000008680000-0x0000000008803000-memory.dmp

Filesize
1.5MB

Download
memory/1040-155-0x0000000007C40000-0x0000000007D98000-memory.dmp

Filesize
1.3MB

Download
memory/1040-153-0x0000000007C40000-0x0000000007D98000-memory.dmp

Filesize
1.3MB

Download
memory/1040-145-0x00000000033C0000-0x0000000003498000-memory.dmp

Filesize
864KB

Download
memory/1136-132-0x0000018019350000-0x00000180193FE000-memory.dmp

Filesize
696KB

Download
memory/1136-138-0x00007FF8F3D30000-0x00007FF8F47F1000-memory.dmp

Filesize
10.8MB

Download
memory/3516-144-0x00000000015E0000-0x00000000015F0000-memory.dmp

Filesize
64KB

Download
memory/3516-147-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/3516-139-0x0000000001A70000-0x0000000001DBA000-memory.dmp

Filesize
3.3MB

Download
memory/3516-143-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3516-137-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/3516-136-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3516-146-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3516-141-0x0000000001430000-0x0000000001440000-memory.dmp

Filesize
64KB

Download
memory/3516-133-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3516-134-0x00000000004012B0-mapping.dmp

Download
memory/5096-150-0x0000000000C80000-0x0000000000CAD000-memory.dmp

Filesize
180KB

Download
memory/5096-151-0x0000000002E50000-0x000000000319A000-memory.dmp

Filesize
3.3MB

Download
memory/5096-152-0x0000000002BE0000-0x0000000002C6F000-memory.dmp

Filesize
572KB

Download
memory/5096-149-0x0000000000CE0000-0x0000000000CF6000-memory.dmp

Filesize
88KB

Download
memory/5096-154-0x0000000000C80000-0x0000000000CAD000-memory.dmp

Filesize
180KB

Download
memory/5096-148-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads