formbook | 895fafaba3dd9be186361c1532b486678371684b42018ca3902306a1b43b1d63

Analysis

max time kernel
149s
max time network
151s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
23-12-2024 15:32

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General

Target

a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe
Size

1.2MB
MD5

8f6f8bc43de5fbdddedb774a22e3dca1
SHA1

3f48029084649e39963710b0ae114b4663d48e68
SHA256

a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f
SHA512

ff48e557c37a8ebda2d9504727681dca35353003e87369e5462fb20a1c4746fb998200130b23518288a2bf7c4af06e8853937251af7b2c17e94a46d39b991797
SSDEEP

24576:7AOcZX4ctcwhwheT60L/2NgeSMj5HHeg/cbGOSMIEn:dPwhUwvfe/5HdYGOSMV

Score

10^/10

formbook ubpr discovery persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

ubpr

Decoy

ptpVli2do9q89N0=

+CSLnNslIIErRTE3deUw4HXnuqwqG4+WpQ==

5IBw+rDmyajH6J9b0Gc0

ITivu/UzzGQKCQ==

qNw+VJ7Ni+WT3pA2e/8=

6VzmXNT+607aCN1UmHCt1CjO

a+xfszZjSqdZhCfX5fXnJkJFIsuN8Ns=

DLyp4MD0xUCL6olI

kysKo0J45suL6olI

oE/eN+zqkP2lyG6YYSalUA==

Rko77gUFcKTQFA==

cW14AsnTkUOf0N6ODWjpj7S6nRI=

M9yx/sTJbmx2vzUeWQ==

SQJdWnStlfaz6J0M04r3MN8=

FLhBiiYfyjfZFOdgHU1SfmVhAGgV

nKgaME1YHRs+cHTkn4oI3ibO

vuZIRIyKMaBGiUl9iaiZxNc=

UPnZdBQV1nzxKB1N

iARlleEZxTSL6olI

w5hz+KfftpWkwox0yH7vo0GrwW7RjWVk

Signatures

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

Checks computer location settings 2 TTPs 4 IoCs

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

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	RegSvcs.exe
Key value queried	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation	RegSvcs.exe

Executes dropped EXE 3 IoCs

pid	Process
560	fujab.exe
5012	RegSvcs.exe
508	RegSvcs.exe

Reads user/profile data of web browsers 3 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials In Files
T1552.001

Credentials from Web Browsers
T1555.003

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\WindowsUpdate = "C:\\Users\\Admin\\AppData\\Local\\Temp\\4_19\\fujab.exe C:\\Users\\Admin\\AppData\\Local\\Temp\\4_19\\dkkwd.mkd"	fujab.exe

Suspicious use of SetThreadContext 6 IoCs

description	pid	Process	procid_target
PID 560 set thread context of 5012	560	fujab.exe	87
PID 560 set thread context of 508	560	fujab.exe	86
PID 5012 set thread context of 3348	5012	RegSvcs.exe	56
PID 508 set thread context of 3348	508	RegSvcs.exe	56
PID 508 set thread context of 3348	508	RegSvcs.exe	56
PID 3188 set thread context of 3348	3188	wscript.exe	56

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

System Information Discovery
T1082

System Location Discovery: System Language Discovery 1 TTPs 6 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	systray.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	WScript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	fujab.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wscript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	RegSvcs.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-1045960512-3948844814-3059691613-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	wscript.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-1045960512-3948844814-3059691613-1000_Classes\Local Settings	a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	WScript.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

pid	Process
5012	RegSvcs.exe
5012	RegSvcs.exe
508	RegSvcs.exe
508	RegSvcs.exe
5012	RegSvcs.exe
5012	RegSvcs.exe
5012	RegSvcs.exe
5012	RegSvcs.exe
5012	RegSvcs.exe
5012	RegSvcs.exe
508	RegSvcs.exe
508	RegSvcs.exe
508	RegSvcs.exe
508	RegSvcs.exe
508	RegSvcs.exe
508	RegSvcs.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
508	RegSvcs.exe
508	RegSvcs.exe
4176	systray.exe
4176	systray.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe

Suspicious behavior: MapViewOfSection 11 IoCs

pid	Process
5012	RegSvcs.exe
508	RegSvcs.exe
5012	RegSvcs.exe
5012	RegSvcs.exe
508	RegSvcs.exe
3188	wscript.exe
508	RegSvcs.exe
508	RegSvcs.exe
3188	wscript.exe
3188	wscript.exe
3188	wscript.exe

Suspicious use of AdjustPrivilegeToken 8 IoCs

description	pid	Process
Token: SeDebugPrivilege	5012	RegSvcs.exe
Token: SeDebugPrivilege	508	RegSvcs.exe
Token: SeShutdownPrivilege	3348	Explorer.EXE
Token: SeCreatePagefilePrivilege	3348	Explorer.EXE
Token: SeShutdownPrivilege	3348	Explorer.EXE
Token: SeCreatePagefilePrivilege	3348	Explorer.EXE
Token: SeDebugPrivilege	3188	wscript.exe
Token: SeDebugPrivilege	4176	systray.exe

Suspicious use of WriteProcessMemory 26 IoCs

description	pid	Process	procid_target
PID 808 wrote to memory of 3308	808	a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe	83
PID 808 wrote to memory of 3308	808	a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe	83
PID 808 wrote to memory of 3308	808	a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe	83
PID 3308 wrote to memory of 560	3308	WScript.exe	84
PID 3308 wrote to memory of 560	3308	WScript.exe	84
PID 3308 wrote to memory of 560	3308	WScript.exe	84
PID 560 wrote to memory of 508	560	fujab.exe	86
PID 560 wrote to memory of 508	560	fujab.exe	86
PID 560 wrote to memory of 508	560	fujab.exe	86
PID 560 wrote to memory of 5012	560	fujab.exe	87
PID 560 wrote to memory of 5012	560	fujab.exe	87
PID 560 wrote to memory of 5012	560	fujab.exe	87
PID 560 wrote to memory of 5012	560	fujab.exe	87
PID 560 wrote to memory of 5012	560	fujab.exe	87
PID 560 wrote to memory of 5012	560	fujab.exe	87
PID 560 wrote to memory of 508	560	fujab.exe	86
PID 560 wrote to memory of 508	560	fujab.exe	86
PID 3348 wrote to memory of 3188	3348	Explorer.EXE	88
PID 3348 wrote to memory of 3188	3348	Explorer.EXE	88
PID 3348 wrote to memory of 3188	3348	Explorer.EXE	88
PID 508 wrote to memory of 4176	508	RegSvcs.exe	98
PID 508 wrote to memory of 4176	508	RegSvcs.exe	98
PID 508 wrote to memory of 4176	508	RegSvcs.exe	98
PID 3188 wrote to memory of 1840	3188	wscript.exe	106
PID 3188 wrote to memory of 1840	3188	wscript.exe	106
PID 3188 wrote to memory of 1840	3188	wscript.exe	106

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3348
- C:\Users\Admin\AppData\Local\Temp\a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe
  "C:\Users\Admin\AppData\Local\Temp\a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe"
  2⤵
  - Checks computer location settings
  - System Location Discovery: System Language Discovery
  - Modifies registry class
  - Suspicious use of WriteProcessMemory
  PID:808
- - C:\Windows\SysWOW64\WScript.exe
    "C:\Windows\System32\WScript.exe" "C:\Users\Admin\AppData\Local\temp\4_19\dqpjc.vbe"
    3⤵
    - Checks computer location settings
    - System Location Discovery: System Language Discovery
    - Modifies registry class
    - Suspicious use of WriteProcessMemory
    PID:3308
  - - C:\Users\Admin\AppData\Local\Temp\4_19\fujab.exe
      "C:\Users\Admin\AppData\Local\Temp\4_19\fujab.exe" dkkwd.mkd
      4⤵
      Executes dropped EXE
      Adds Run key to start application
      Suspicious use of SetThreadContext
      System Location Discovery: System Language Discovery
      Suspicious use of WriteProcessMemory
      PID:560
    - - C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
        
        "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
        5⤵
        Checks computer location settings
        Executes dropped EXE
        Suspicious use of SetThreadContext
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:508
      - C:\Windows\SysWOW64\systray.exe
        
        "C:\Windows\SysWOW64\systray.exe"
        6⤵
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        
        PID:4176
    - - C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
        
        "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
        5⤵
        Checks computer location settings
        Executes dropped EXE
        Suspicious use of SetThreadContext
        Suspicious behavior: EnumeratesProcesses
        Suspicious behavior: MapViewOfSection
        Suspicious use of AdjustPrivilegeToken
        
        PID:5012
- C:\Windows\SysWOW64\wscript.exe
  "C:\Windows\SysWOW64\wscript.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3188
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1840
- C:\Windows\SysWOW64\autoconv.exe
  "C:\Windows\SysWOW64\autoconv.exe"
  2⤵
  PID:2884

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials from Password Stores

T1555

Credentials from Web Browsers

T1555.003

Unsecured Credentials

T1552

Credentials In Files

T1552.001

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\4_19\ebmbjbx.ppt

Filesize
53KB

MD5
5fedb72dfc6e91cd725c629f14bb8193

SHA1
183be10969a92612c99b454fa9c373cb51a14442

SHA256
24f8a3e3028e79f6733323f442b256d15a415b8146144e6aa5faea8607d27e1c

SHA512
fdda6c45f7f92587dc513e936998772841d4470f609e52c8cc1642ce96bebfba46d8ac9e0aec2a5e3948184f0e56d782789c1f550392def6de25effe386867bd

Download Submit
C:\Users\Admin\AppData\Local\Temp\4_19\fujab.exe

Filesize
1.1MB

MD5
b5b4f7b97106aff4bd860cff0e13dcdc

SHA1
42ca977e0d14bde5d5831b7fe10f516186df3fc5

SHA256
1dbad30b09c655ff987f25c312f56e9695d60105c240686d05d33941c854fa73

SHA512
3e6742aea38c0cbfee8e5cb8f11d328c947c7e4fcca4604b498a7e254aacfe53cc8fc6171d5ed2db7755abb510c09036bfbb1e5a9d9b7b47a587b43c828e3185

Download Submit
C:\Users\Admin\AppData\Local\Temp\4_19\hpblwtbikv.pii

Filesize
370KB

MD5
87a128053cdadb9f63e49d0fbe028193

SHA1
32a619ae4d4ea69460ef07407bf3e609d1665a5d

SHA256
d267e67c2a99ef4a9dbf8546a2a8c9efb5cdd004b9b7cdec8539e2f248711398

SHA512
9d41d5b19268bea794c4d566f2dc3902d16abf0ed0b14ef762b7ec824212291fbc647f55640f6c24f08acb7e489c78893beb99bbe5f9df00b09e65c1692e18cc

Download Submit
C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe

Filesize
44KB

MD5
9d352bc46709f0cb5ec974633a0c3c94

SHA1
1969771b2f022f9a86d77ac4d4d239becdf08d07

SHA256
2c1eeb7097023c784c2bd040a2005a5070ed6f3a4abf13929377a9e39fab1390

SHA512
13c714244ec56beeb202279e4109d59c2a43c3cf29f90a374a751c04fd472b45228ca5a0178f41109ed863dbd34e0879e4a21f5e38ae3d89559c57e6be990a9b

Download Submit
C:\Users\Admin\AppData\Local\temp\4_19\dqpjc.vbe

Filesize
21KB

MD5
61b8d81488663b063944b798ca13f581

SHA1
fab6888a27ca56d2b4ae0b7103ac77ed19939bac

SHA256
f61e53b8d0b481399eef43cdbfb19d3c452fe6afd067e6860657dc47bacd0e7f

SHA512
f65f16315aee56367e9b76390c1cdccf91b9deb00d865f976af5b9f07f916bcf52ba7d65833b020febac2e045f7f1710feaa7d4358b4b01ef54a1f7100511b6b

Download Submit
memory/508-165-0x0000000000400000-0x00000000009C6000-memory.dmp

Filesize
5.8MB

Download
memory/508-161-0x0000000000400000-0x00000000009C6000-memory.dmp

Filesize
5.8MB

Download
memory/508-168-0x0000000000400000-0x00000000009C6000-memory.dmp

Filesize
5.8MB

Download
memory/3188-166-0x0000000000920000-0x0000000000947000-memory.dmp

Filesize
156KB

Download
memory/3188-169-0x0000000000890000-0x00000000008BD000-memory.dmp

Filesize
180KB

Download
memory/3348-176-0x0000000002FF0000-0x00000000030B9000-memory.dmp

Filesize
804KB

Download
memory/4176-171-0x0000000000E80000-0x0000000000E86000-memory.dmp

Filesize
24KB

Download
memory/5012-164-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/5012-158-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download