formbook | 13a743db77a54ff14ced8a949be8a503f65962cd7217155fd662481733c0316e

General

Target

Invoice NO 22073895.exe
Size

486KB
MD5

85cd688a9fee95b88b94b6879039201f
SHA1

0843488b993fd26651cff415ac5a43c593defa25
SHA256

4d3261b30e45d9577916b421a9b829836e955a9be539866aa29d21aad01283c1
SHA512

9ed65a00f4e6c276b18778feac6140759ebbc159d15c4c20280ff13b1887c73ec4fc88a38abe0f8e0d75ec0e5a5acf82478472b761247bee1357d130bf80ab45
SSDEEP

12288:AYn68Ex+E5Z8kJqeKPMwwOfGo5KNfhtDuCytMi4zaaKL:AYn6DAEgIqecuo5KbsCy6igbG

Score

10^/10

formbook xloader poub discovery loader rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

poub

Decoy

WY0eksfISzRg4O6c+opnGL6gaw==

moRjn9ExtYi8UmUo+Tya

2vME+GedoxzFnuLXesUoVj4=

EvW4JWJ1NQ8nN3tA3SM=

2mK9efMZMgN1VOs=

8d0jua5b0J6AQEW7

/2cyThOd37DSTYMASDye4Q0t/Vs=

ral+tbIh2KKAQEW7

YLY9jsPtYB/FRmMo+Tya

R1WcElWAMtFxFrVqtZT2ZpIS9xRZNho=

KFXGg/T1pCC9GjrxUPTcjw==

8mMlK5nDwjjPFTP5jMtAtQ0t/Vs=

c7am8nhhlCo=

UW91trZj6dENxuRdpxOvW1Cf

sjOMUcvq6lYJCZEfV4euFzY=

62nBgPjdmWQkmWElww==

64E8JqA1aruSUvw=

NqI1reXpcR+REye0

8+y1oOsbjgSyEhjXUPTcjw==

Rx9by8gNBwN1VOs=

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Formbook family
formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
Xloader family
xloader

Xloader payload 4 IoCs

rat

resource	yara_rule
behavioral1/memory/3016-17-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/3016-20-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/3016-23-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral1/memory/2812-30-0x0000000000080000-0x00000000000AC000-memory.dmp	xloader

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	pvwuec.exe

Executes dropped EXE 2 IoCs

pid	Process
2172	pvwuec.exe
3016	pvwuec.exe

Loads dropped DLL 3 IoCs

pid	Process
2396	Invoice NO 22073895.exe
2396	Invoice NO 22073895.exe
2172	pvwuec.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2172 set thread context of 3016	2172	pvwuec.exe	30
PID 3016 set thread context of 1268	3016	pvwuec.exe	20
PID 3016 set thread context of 1268	3016	pvwuec.exe	20
PID 2812 set thread context of 1268	2812	control.exe	20

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	Invoice NO 22073895.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	pvwuec.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	control.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 30 IoCs

pid	Process
3016	pvwuec.exe
3016	pvwuec.exe
3016	pvwuec.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe
2812	control.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
2172	pvwuec.exe
3016	pvwuec.exe
3016	pvwuec.exe
3016	pvwuec.exe
3016	pvwuec.exe
2812	control.exe
2812	control.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	3016	pvwuec.exe
Token: SeDebugPrivilege	2812	control.exe

Suspicious use of WriteProcessMemory 17 IoCs

description	pid	Process	procid_target
PID 2396 wrote to memory of 2172	2396	Invoice NO 22073895.exe	29
PID 2396 wrote to memory of 2172	2396	Invoice NO 22073895.exe	29
PID 2396 wrote to memory of 2172	2396	Invoice NO 22073895.exe	29
PID 2396 wrote to memory of 2172	2396	Invoice NO 22073895.exe	29
PID 2172 wrote to memory of 3016	2172	pvwuec.exe	30
PID 2172 wrote to memory of 3016	2172	pvwuec.exe	30
PID 2172 wrote to memory of 3016	2172	pvwuec.exe	30
PID 2172 wrote to memory of 3016	2172	pvwuec.exe	30
PID 2172 wrote to memory of 3016	2172	pvwuec.exe	30
PID 1268 wrote to memory of 2812	1268	Explorer.EXE	31
PID 1268 wrote to memory of 2812	1268	Explorer.EXE	31
PID 1268 wrote to memory of 2812	1268	Explorer.EXE	31
PID 1268 wrote to memory of 2812	1268	Explorer.EXE	31
PID 2812 wrote to memory of 2920	2812	control.exe	32
PID 2812 wrote to memory of 2920	2812	control.exe	32
PID 2812 wrote to memory of 2920	2812	control.exe	32
PID 2812 wrote to memory of 2920	2812	control.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1268
- C:\Users\Admin\AppData\Local\Temp\Invoice NO 22073895.exe
  "C:\Users\Admin\AppData\Local\Temp\Invoice NO 22073895.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2396
- - C:\Users\Admin\AppData\Local\Temp\pvwuec.exe
    "C:\Users\Admin\AppData\Local\Temp\pvwuec.exe" C:\Users\Admin\AppData\Local\Temp\eeelcb.fn
    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:2172
  - - C:\Users\Admin\AppData\Local\Temp\pvwuec.exe
      "C:\Users\Admin\AppData\Local\Temp\pvwuec.exe"
      4⤵
      Checks computer location settings
      Executes dropped EXE
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:3016
- C:\Windows\SysWOW64\control.exe
  "C:\Windows\SysWOW64\control.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:2812
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\pvwuec.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:2920

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

2

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\eeelcb.fn

Filesize
5KB

MD5
c4ee853696ad5db212cd6ae2bb8a0fe1

SHA1
840ccd25c091a082be426b35386ce7ab8f5d0631

SHA256
6c92c5b0c148c513174215823f3ba3f7f53adbaae077553219826b35553edba1

SHA512
7527d4792d58829f38ed4509a37cc248a02aaeeddf747d3afe3c3f380f8fdad0ebe39e9c989bf1d224f54fab0d187379a93eb9a61800fd7d1f52eb4e6ec9e8c3

Download Submit
C:\Users\Admin\AppData\Local\Temp\serrf.p

Filesize
196KB

MD5
f33a9bba9a07130a2662f4f14e696e7c

SHA1
6fd979cbec5aaa33f8276ca0825a8c0e71768499

SHA256
ea5fe369ca49d659b7cf129def53fd7a1589c9ccdf16a7270354897e885d730c

SHA512
8df1c084b2dcf922faa9ae404642ab9e417b50bdafbf88ce14f1df1d3c3894d7e2f23e5e83ac4362edec3aa0d5a898af9087dac3680731a8dc8960a43b33cdfb

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

Filesize
84KB

MD5
e87c6c672ec024582ffb00811abf747e

SHA1
05921c941ed33b6e0e4cd35c20a452d0659d04dd

SHA256
17a23dd9b5a1b36f5db90ea4e102a03a8dd14557b60f4c19c17e62e53ac19f86

SHA512
5d09656b375b7cb2a3e3062e4a4af3c77663cc454e79a7be59f2996b4db54e8609f6de7b0ad27432e42b45f2e544a22ba43096b61be6d06d36ff1b20b1e49cb5

Download Submit
memory/1268-21-0x0000000006BF0000-0x0000000006D88000-memory.dmp

Filesize
1.6MB

Download
memory/1268-24-0x0000000006BF0000-0x0000000006D88000-memory.dmp

Filesize
1.6MB

Download
memory/1268-25-0x0000000004B20000-0x0000000004C2C000-memory.dmp

Filesize
1.0MB

Download
memory/1268-31-0x0000000004B20000-0x0000000004C2C000-memory.dmp

Filesize
1.0MB

Download
memory/2172-11-0x0000000000220000-0x0000000000222000-memory.dmp

Filesize
8KB

Download
memory/2812-28-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2812-29-0x0000000000400000-0x000000000041F000-memory.dmp

Filesize
124KB

Download
memory/2812-30-0x0000000000080000-0x00000000000AC000-memory.dmp

Filesize
176KB

Download
memory/3016-17-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3016-20-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/3016-23-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

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Analysis

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