formbook | 008eee66fc8358a7cda63d1e33042f3306e853e85864083cb600257a60bd615f

Analysis

max time kernel
148s
max time network
143s
platform
windows10-2004_x64
resource
win10v2004-20241007-en
resource tags

arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system
submitted
25-12-2024 00:45

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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 3 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-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	WScript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	RegSvcs.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000\Control Panel\International\Geo\Nation	a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe

Executes dropped EXE 3 IoCs

pid	Process
4120	fujab.exe
1492	RegSvcs.exe
4972	RegSvcs.exe

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 4 IoCs

description	pid	Process	procid_target
PID 4120 set thread context of 1492	4120	fujab.exe	87
PID 1492 set thread context of 3520	1492	RegSvcs.exe	56
PID 1492 set thread context of 3520	1492	RegSvcs.exe	56
PID 4564 set thread context of 3520	4564	cmmon32.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 5 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	RegSvcs.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmmon32.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

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-2878641211-696417878-3864914810-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe

Modifies registry class 2 IoCs

description	ioc	Process
Key created	\REGISTRY\USER\S-1-5-21-2878641211-696417878-3864914810-1000_Classes\Local Settings	a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\WOW6432Node\CLSID\{1f3427c8-5c10-4210-aa03-2ee45287d668}\Instance\	WScript.exe

Suspicious behavior: EnumeratesProcesses 60 IoCs

pid	Process
1492	RegSvcs.exe
1492	RegSvcs.exe
1492	RegSvcs.exe
1492	RegSvcs.exe
1492	RegSvcs.exe
1492	RegSvcs.exe
1492	RegSvcs.exe
1492	RegSvcs.exe
1492	RegSvcs.exe
1492	RegSvcs.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
1492	RegSvcs.exe
1492	RegSvcs.exe
1492	RegSvcs.exe
1492	RegSvcs.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe
4564	cmmon32.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

description	pid	Process
Token: SeDebugPrivilege	1492	RegSvcs.exe
Token: SeShutdownPrivilege	3520	Explorer.EXE
Token: SeCreatePagefilePrivilege	3520	Explorer.EXE
Token: SeShutdownPrivilege	3520	Explorer.EXE
Token: SeCreatePagefilePrivilege	3520	Explorer.EXE
Token: SeDebugPrivilege	4564	cmmon32.exe

Suspicious use of WriteProcessMemory 21 IoCs

description	pid	Process	procid_target
PID 5108 wrote to memory of 2988	5108	a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe	83
PID 5108 wrote to memory of 2988	5108	a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe	83
PID 5108 wrote to memory of 2988	5108	a52d0bc31a250c5dd5c84c75fca9b965955297d20f582d79849c17fb59c4c04f.exe	83
PID 2988 wrote to memory of 4120	2988	WScript.exe	84
PID 2988 wrote to memory of 4120	2988	WScript.exe	84
PID 2988 wrote to memory of 4120	2988	WScript.exe	84
PID 4120 wrote to memory of 4972	4120	fujab.exe	86
PID 4120 wrote to memory of 4972	4120	fujab.exe	86
PID 4120 wrote to memory of 4972	4120	fujab.exe	86
PID 4120 wrote to memory of 1492	4120	fujab.exe	87
PID 4120 wrote to memory of 1492	4120	fujab.exe	87
PID 4120 wrote to memory of 1492	4120	fujab.exe	87
PID 4120 wrote to memory of 1492	4120	fujab.exe	87
PID 4120 wrote to memory of 1492	4120	fujab.exe	87
PID 4120 wrote to memory of 1492	4120	fujab.exe	87
PID 1492 wrote to memory of 4564	1492	RegSvcs.exe	101
PID 1492 wrote to memory of 4564	1492	RegSvcs.exe	101
PID 1492 wrote to memory of 4564	1492	RegSvcs.exe	101
PID 4564 wrote to memory of 1408	4564	cmmon32.exe	105
PID 4564 wrote to memory of 1408	4564	cmmon32.exe	105
PID 4564 wrote to memory of 1408	4564	cmmon32.exe	105

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of AdjustPrivilegeToken
PID:3520
- 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:5108
- - 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:2988
  - - 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:4120
    - - C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe
        
        "C:\Users\Admin\AppData\Local\Temp\RegSvcs.exe"
        5⤵
        Executes dropped EXE
        
        PID:4972
    - - 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:1492
      - C:\Windows\SysWOW64\cmmon32.exe
        
        "C:\Windows\SysWOW64\cmmon32.exe"
        6⤵
        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:4564
        
        C:\Program Files\Mozilla Firefox\Firefox.exe
        
        "C:\Program Files\Mozilla Firefox\Firefox.exe"
        7⤵
        
        PID:1408

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

Discovery

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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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/1492-158-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1492-162-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1492-163-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3520-169-0x0000000004AD0000-0x0000000004BA2000-memory.dmp

Filesize
840KB

Download
memory/4564-164-0x0000000000870000-0x000000000087C000-memory.dmp

Filesize
48KB

Download
memory/4564-166-0x0000000001200000-0x000000000122D000-memory.dmp

Filesize
180KB

Download