formbook | 387119236c9bd4c60215cab8efae3cdd16a0fe9906d83016b2dc8ee425fad40d

General

Target
Swift copy.exe
Size 615KB
Sample200714-7cc2vk9pba
SHA256 387119236c9bd4c60215cab8efae3cdd16a0fe9906d83016b2dc8ee425fad40d
MD5 cb09fded55e0fb3106e8a1e167b9a205
SHA1 64a2fcc3a69830df7384676bf41352ad75fad3c9
SHA512 13fc4ba94f05ab58cb978811211ea969367ce9a31845017d9a839c2d503416ba157184e030697060e7d30d87e7e66a2aefcd1caa9ef29b943a8c75a5d39cec34
MD5 SHA1 SHA512

Score

10^/10

trojan spyware stealer formbook persistence

Malware Config

Signatures

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
1844	Swift copy.exe
1844	Swift copy.exe
1844	Swift copy.exe
1844	Swift copy.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe

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

System policy modification 1 TTPs 1 IoCs

evasion

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	mstsc.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-910373003-3952921535-3480519689-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	mstsc.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1400 set thread context of 1844	1400	Swift copy.exe	28
PID 1844 set thread context of 1284	1844	Swift copy.exe	20
PID 1844 set thread context of 1284	1844	Swift copy.exe	20
PID 1740 set thread context of 1284	1740	mstsc.exe	20

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	mstsc.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\9R0D1NLHW = "C:\\Program Files (x86)\\Oj0hxn\\taskhost-zu.exe"	mstsc.exe

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

Data from Local System
T1005

Credentials in Files
T1081

Suspicious behavior: EnumeratesProcesses 22 IoCs

pid	Process
1844	Swift copy.exe
1844	Swift copy.exe
1844	Swift copy.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe
1740	mstsc.exe

Deletes itself 1 IoCs

pid	Process
464	cmd.exe

Suspicious use of WriteProcessMemory 24 IoCs

description	pid	Process	procid_target
PID 1400 wrote to memory of 1796	1400	Swift copy.exe	26
PID 1400 wrote to memory of 1796	1400	Swift copy.exe	26
PID 1400 wrote to memory of 1796	1400	Swift copy.exe	26
PID 1400 wrote to memory of 1796	1400	Swift copy.exe	26
PID 1400 wrote to memory of 1844	1400	Swift copy.exe	28
PID 1400 wrote to memory of 1844	1400	Swift copy.exe	28
PID 1400 wrote to memory of 1844	1400	Swift copy.exe	28
PID 1400 wrote to memory of 1844	1400	Swift copy.exe	28
PID 1400 wrote to memory of 1844	1400	Swift copy.exe	28
PID 1400 wrote to memory of 1844	1400	Swift copy.exe	28
PID 1400 wrote to memory of 1844	1400	Swift copy.exe	28
PID 1284 wrote to memory of 1740	1284	Explorer.EXE	29
PID 1284 wrote to memory of 1740	1284	Explorer.EXE	29
PID 1284 wrote to memory of 1740	1284	Explorer.EXE	29
PID 1284 wrote to memory of 1740	1284	Explorer.EXE	29
PID 1740 wrote to memory of 464	1740	mstsc.exe	30
PID 1740 wrote to memory of 464	1740	mstsc.exe	30
PID 1740 wrote to memory of 464	1740	mstsc.exe	30
PID 1740 wrote to memory of 464	1740	mstsc.exe	30
PID 1740 wrote to memory of 1620	1740	mstsc.exe	33
PID 1740 wrote to memory of 1620	1740	mstsc.exe	33
PID 1740 wrote to memory of 1620	1740	mstsc.exe	33
PID 1740 wrote to memory of 1620	1740	mstsc.exe	33
PID 1740 wrote to memory of 1620	1740	mstsc.exe	33

Suspicious use of FindShellTrayWindow 4 IoCs

pid	Process
1284	Explorer.EXE
1284	Explorer.EXE
1284	Explorer.EXE
1284	Explorer.EXE

Suspicious use of SendNotifyMessage 4 IoCs

pid	Process
1284	Explorer.EXE
1284	Explorer.EXE
1284	Explorer.EXE
1284	Explorer.EXE

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence

Scheduled Task

T1053

pid	Process
1796	schtasks.exe

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Program Files (x86)\Oj0hxn\taskhost-zu.exe	mstsc.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1844	Swift copy.exe
Token: SeDebugPrivilege	1740	mstsc.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
PID:1284
- C:\Users\Admin\AppData\Local\Temp\Swift copy.exe
  "C:\Users\Admin\AppData\Local\Temp\Swift copy.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1400
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\XlcuZliYIpL" /XML "C:\Users\Admin\AppData\Local\Temp\tmp50DD.tmp"
    3⤵
    - Creates scheduled task(s)
    PID:1796
- - C:\Users\Admin\AppData\Local\Temp\Swift copy.exe
    "{path}"
    3⤵
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    PID:1844
- C:\Windows\SysWOW64\mstsc.exe
  "C:\Windows\SysWOW64\mstsc.exe"
  2⤵
  - Suspicious behavior: MapViewOfSection
  - System policy modification
  - Modifies Internet Explorer settings
  - Suspicious use of SetThreadContext
  - Adds policy Run key to start application
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of WriteProcessMemory
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  PID:1740
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\Swift copy.exe"
    3⤵
    - Deletes itself
    PID:464
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1620