formbook | f628fba1c3baac9d0485cf036248f3918a5c1f1741d18fb5c13f077f70e1ee11

General

Target

oaieFYV.exe
Size

244KB
MD5

d8be70132f0b64b10f8b9e2fafdaf7a4
SHA1

a83a64696c9872f94fa5ddb592113142845470e6
SHA256

ae3f17f0d32a8d4f5e5095108f2f0168755351b4cf1d415fa5c3d953872f990b
SHA512

cc33bef65a281b06a595a64736481fd87cf2615a0504b698268663cfc20e60af93e1a0976c97f813187ed01b212bfac2166d0f72626c82e7713979cdae77587b
SSDEEP

6144:5weEfHdpdgNEov9JAATML4EVzMRYUBalUCAxs0Qch:adpdxov9/fEVzDlf+NQ+

Score

10^/10

formbook oi57 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

oi57

Decoy

brave-offers.com

holodeath.com

wangzhanlishi.com

themeparkoutfitters.com

7letterspro.com

n8u9hm.xyz

invoicemojo.com

quwokau.art

propertycaretaunton.co.uk

waterpurificationguys.com

iracingf3setups.com

socialbutterflyllc.com

bankid.site

alexscraftsmandesign.com

diamondshop.info

cybersamurai42.com

isippets.com

louareafantasy.com

thebookdealer.co.uk

les-celestines.com

Signatures

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

Formbook payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/2140-12-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2140-15-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral1/memory/2688-21-0x0000000000080000-0x00000000000AF000-memory.dmp	formbook

Executes dropped EXE 2 IoCs

pid	Process
2932	hmyvjhoqve.exe
2140	hmyvjhoqve.exe

Loads dropped DLL 2 IoCs

pid	Process
2804	oaieFYV.exe
2932	hmyvjhoqve.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2932 set thread context of 2140	2932	hmyvjhoqve.exe	32
PID 2140 set thread context of 1196	2140	hmyvjhoqve.exe	21
PID 2688 set thread context of 1196	2688	colorcpl.exe	21

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 4 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	oaieFYV.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	hmyvjhoqve.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	colorcpl.exe

Suspicious behavior: EnumeratesProcesses 31 IoCs

pid	Process
2140	hmyvjhoqve.exe
2140	hmyvjhoqve.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe
2688	colorcpl.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2932	hmyvjhoqve.exe
2140	hmyvjhoqve.exe
2140	hmyvjhoqve.exe
2140	hmyvjhoqve.exe
2688	colorcpl.exe
2688	colorcpl.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2140	hmyvjhoqve.exe
Token: SeDebugPrivilege	2688	colorcpl.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2804 wrote to memory of 2932	2804	oaieFYV.exe	30
PID 2804 wrote to memory of 2932	2804	oaieFYV.exe	30
PID 2804 wrote to memory of 2932	2804	oaieFYV.exe	30
PID 2804 wrote to memory of 2932	2804	oaieFYV.exe	30
PID 2932 wrote to memory of 2140	2932	hmyvjhoqve.exe	32
PID 2932 wrote to memory of 2140	2932	hmyvjhoqve.exe	32
PID 2932 wrote to memory of 2140	2932	hmyvjhoqve.exe	32
PID 2932 wrote to memory of 2140	2932	hmyvjhoqve.exe	32
PID 2932 wrote to memory of 2140	2932	hmyvjhoqve.exe	32
PID 1196 wrote to memory of 2688	1196	Explorer.EXE	33
PID 1196 wrote to memory of 2688	1196	Explorer.EXE	33
PID 1196 wrote to memory of 2688	1196	Explorer.EXE	33
PID 1196 wrote to memory of 2688	1196	Explorer.EXE	33
PID 2688 wrote to memory of 2716	2688	colorcpl.exe	34
PID 2688 wrote to memory of 2716	2688	colorcpl.exe	34
PID 2688 wrote to memory of 2716	2688	colorcpl.exe	34
PID 2688 wrote to memory of 2716	2688	colorcpl.exe	34

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1196
- C:\Users\Admin\AppData\Local\Temp\oaieFYV.exe
  "C:\Users\Admin\AppData\Local\Temp\oaieFYV.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2804
- - C:\Users\Admin\AppData\Local\Temp\hmyvjhoqve.exe
    "C:\Users\Admin\AppData\Local\Temp\hmyvjhoqve.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of WriteProcessMemory
    PID:2932
  - - C:\Users\Admin\AppData\Local\Temp\hmyvjhoqve.exe
      "C:\Users\Admin\AppData\Local\Temp\hmyvjhoqve.exe"
      4⤵
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2140
- C:\Windows\SysWOW64\colorcpl.exe
  "C:\Windows\SysWOW64\colorcpl.exe"
  2⤵
  - 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:2688
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\hmyvjhoqve.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2716

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Information Discovery

1

T1082

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ayebrzdlez.lye

Filesize
5KB

MD5
00df8877841403a137bc30e8f00d780d

SHA1
e05c051c0d7d7b49eec18f33a73e22002c270bf8

SHA256
4a3a5f1961878ee5b09e8770a5423ca9aa765e2f8d2c83da69ab80065f33af66

SHA512
f48d824065e1d44410c08ce9739b5dcb145f00425b0ed06cb3adc6bc3d1c327faed87225b679eae023ff4325535eb8a27c800ac5e435276f846fe8f1860fe7b0

Download Submit
C:\Users\Admin\AppData\Local\Temp\ojifqlc.tm

Filesize
185KB

MD5
ce6bf425aae7ba0199018f3c39205a7f

SHA1
6b1ab81a3f6872ba78ff13285c1ff219c31292a7

SHA256
87a804eee1662314b699a8178ed8da0fa5be7b07f0205cb81ac3ad9d96a2a01d

SHA512
8d7ecb7a2b007a14a6d298ef2976a3f8ad084f4e656d9655ce1650b4e72a11704ad67d7ed9731a6b68b6ed7ee5a19a035db34cc2cb28db46667d1ebce4e0af43

Download Submit
\Users\Admin\AppData\Local\Temp\hmyvjhoqve.exe

Filesize
6KB

MD5
6b668312b1fc254abf6998f94b7698ad

SHA1
f6f70ca64564c0460bfd433c61d567e2188259fa

SHA256
12a5d66b2147569c4bb95fc174dd277b1e9ae75dbc3934075f22bace2246fe06

SHA512
4f637f37aa50f2f715a48650e1dfe22dbc36bcee71ac6abd6a3d84a349d6c0bdda591daceab8d981c91a25d1286f0e3d890496ac5243d3424b01bdf12d05a3ee

Download Submit
memory/1196-16-0x00000000051F0000-0x000000000532E000-memory.dmp

Filesize
1.2MB

Download
memory/1196-22-0x00000000051F0000-0x000000000532E000-memory.dmp

Filesize
1.2MB

Download
memory/1196-27-0x0000000004DC0000-0x0000000004E71000-memory.dmp

Filesize
708KB

Download
memory/2140-12-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2140-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2688-19-0x0000000000C00000-0x0000000000C18000-memory.dmp

Filesize
96KB

Download
memory/2688-20-0x0000000000C00000-0x0000000000C18000-memory.dmp

Filesize
96KB

Download
memory/2688-21-0x0000000000080000-0x00000000000AF000-memory.dmp

Filesize
188KB

Download
memory/2932-8-0x0000000000280000-0x0000000000282000-memory.dmp

Filesize
8KB

Download

Analysis

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