formbook | aa7ab4157c0ea04bfff754a8427eddf57cc270d8cb7b01752cc070c71ac7bdd8

General

Target

xxrkypy.exe
Size

5KB
MD5

818e4839cf473064fde652fb001fcce6
SHA1

b051185eddc6992bd0b4092e338ed067487af57a
SHA256

72eefcdcbb8c9510a83e9ce80810d84688416ede5d4041aee4944f04b7cb903b
SHA512

9b8aa6a9ef6d125f80ef555429d45e970f873440d95ac8f687a2ff782d46fdf71c8b66d351010346b989fbeb74f815e96b774a6c463aa9e974399e9a67e50c06
SSDEEP

96:bhrJTnFlgFjwaepQr6SRmoynhKMTnHOjx:BJ4Fsaez6moyncMTnH

Score

10^/10

formbook f4ca discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

f4ca

Decoy

omFHB5ajfJi1UEIEV9XcoRw=

UBjJkmQPyprdhcFF/bdCWQ==

evGKkBUj1je+otcfpw==

KgvGVeOATSt3nug0BIOm2JvOQycB

Lv6o3K0r9aSjI0lr9fg1txw=

LH1jJb/HieQpsEdqWCQTvX2PmsDVIeg=

99dte0XauJfk6Xv+uQxJFgA1gMktBA==

21FkkGB9gMniDQw2ffu6

r4lKBM/q6TZwVZfS

F+14qHeVWi56KdQ=

BgWXRsVoICMvvQ==

I+EozFl0Uy56KdQ=

xoXCgEllKEbWfjFCCLo=

qo9G1lXvvGt5GkxrLQWw

ORNlYic0PJ2ip4geEFSv

Yj+GFpvFxy0uVYx1fLI/XQ==

XL+veIKPjOTe4fjvFs+n

D2JKVAfuakXCAyoEvw==

voWJU81tH56wvt/vImbCcgVd

dVEcwFrmb8bZ4vXvFs+n

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 1 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-1-5-21-3692679935-4019334568-335155002-1000\Control Panel\International\Geo\Nation	xxrkypy.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1688 set thread context of 2044	1688	xxrkypy.exe	30
PID 2044 set thread context of 1212	2044	xxrkypy.exe	21
PID 2156 set thread context of 1212	2156	help.exe	21

System Location Discovery: System Language Discovery 1 TTPs 2 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	xxrkypy.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	help.exe

Suspicious behavior: EnumeratesProcesses 33 IoCs

pid	Process
2044	xxrkypy.exe
2044	xxrkypy.exe
2044	xxrkypy.exe
2044	xxrkypy.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe
2156	help.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
1688	xxrkypy.exe
2044	xxrkypy.exe
2044	xxrkypy.exe
2044	xxrkypy.exe
2156	help.exe
2156	help.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2044	xxrkypy.exe
Token: SeDebugPrivilege	2156	help.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 1688 wrote to memory of 2044	1688	xxrkypy.exe	30
PID 1688 wrote to memory of 2044	1688	xxrkypy.exe	30
PID 1688 wrote to memory of 2044	1688	xxrkypy.exe	30
PID 1688 wrote to memory of 2044	1688	xxrkypy.exe	30
PID 1688 wrote to memory of 2044	1688	xxrkypy.exe	30
PID 1212 wrote to memory of 2156	1212	Explorer.EXE	31
PID 1212 wrote to memory of 2156	1212	Explorer.EXE	31
PID 1212 wrote to memory of 2156	1212	Explorer.EXE	31
PID 1212 wrote to memory of 2156	1212	Explorer.EXE	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1212
- C:\Users\Admin\AppData\Local\Temp\xxrkypy.exe
  "C:\Users\Admin\AppData\Local\Temp\xxrkypy.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of WriteProcessMemory
  PID:1688
- - C:\Users\Admin\AppData\Local\Temp\xxrkypy.exe
    "C:\Users\Admin\AppData\Local\Temp\xxrkypy.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2044
- C:\Windows\SysWOW64\help.exe
  "C:\Windows\SysWOW64\help.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:2156

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

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

memory/1212-6-0x0000000000010000-0x0000000000020000-memory.dmp

Filesize
64KB

Download
memory/1212-7-0x00000000047E0000-0x00000000048C0000-memory.dmp

Filesize
896KB

Download
memory/1212-14-0x00000000047E0000-0x00000000048C0000-memory.dmp

Filesize
896KB

Download
memory/1688-0-0x0000000000230000-0x0000000000232000-memory.dmp

Filesize
8KB

Download
memory/2044-1-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2044-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2044-5-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2156-10-0x0000000000A20000-0x0000000000A26000-memory.dmp

Filesize
24KB

Download
memory/2156-12-0x0000000000A20000-0x0000000000A26000-memory.dmp

Filesize
24KB

Download
memory/2156-13-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download

Analysis

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