formbook | 9d1386eddd2a00f8d0450970fced6969aaeb4ab7e5da9fe46fd3423140681142

General

Target

TRNSF.exe
Size

1.1MB
MD5

fe9fba11b0354b03ec4374321cf5d7f2
SHA1

5e52cfbf1f5020337a2bfafe83881217df3869dd
SHA256

1fc7c86df7aa45224f6c8f4a94513663dfe77dc79603a0c1325736c376aa68e2
SHA512

41f9145b538668034d4812ac5cfc8020c59a9d905715b8370dfac6fde11ca613bb1a70c45819883244af81798b5370e3542001bda0bc783c7d1ff1a7160511d9
SSDEEP

12288:bmqWFHmsSSMPQipP5JG/UXU9l9SG8nB2A+WwWL5ED96ZaeAiMJVpQhoEp53UC:SRHHipHCUkVWB2hr+ED96ZyquEplU

Score

10^/10

formbook gbwy discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

gbwy

Decoy

fortnitegol.com

damoa.clinic

flifeunite.com

smacey.com

geekflare.host

teachflame.com

moneymakersclub.net

hollstore.com

virtual-box.cloud

electrojagat.com

lucianenergy.com

sagradha.net

bluehatcrypto.com

brandaotec.com

elisabeth-koblitz.com

miamielc-kuwait.com

juicedbikeszendesk.com

artesiansalt.com

avisena.net

homiesexuals.com

Signatures

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

Formbook payload 2 IoCs

rat

resource	yara_rule
behavioral1/memory/2772-20-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/2772-24-0x0000000000400000-0x000000000042E000-memory.dmp	formbook

Deletes itself 1 IoCs

pid	Process
2300	cmd.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1952 set thread context of 2772	1952	TRNSF.exe	33
PID 2772 set thread context of 1244	2772	TRNSF.exe	21
PID 1828 set thread context of 1244	1828	systray.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	TRNSF.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	schtasks.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	systray.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Scheduled Task/Job: Scheduled Task 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

persistence execution

Scheduled Task

T1053.005

pid	Process
2896	schtasks.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
2772	TRNSF.exe
2772	TRNSF.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe
1828	systray.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2772	TRNSF.exe
2772	TRNSF.exe
2772	TRNSF.exe
1828	systray.exe
1828	systray.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2772	TRNSF.exe
Token: SeDebugPrivilege	1828	systray.exe

Suspicious use of WriteProcessMemory 19 IoCs

description	pid	Process	procid_target
PID 1952 wrote to memory of 2896	1952	TRNSF.exe	31
PID 1952 wrote to memory of 2896	1952	TRNSF.exe	31
PID 1952 wrote to memory of 2896	1952	TRNSF.exe	31
PID 1952 wrote to memory of 2896	1952	TRNSF.exe	31
PID 1952 wrote to memory of 2772	1952	TRNSF.exe	33
PID 1952 wrote to memory of 2772	1952	TRNSF.exe	33
PID 1952 wrote to memory of 2772	1952	TRNSF.exe	33
PID 1952 wrote to memory of 2772	1952	TRNSF.exe	33
PID 1952 wrote to memory of 2772	1952	TRNSF.exe	33
PID 1952 wrote to memory of 2772	1952	TRNSF.exe	33
PID 1952 wrote to memory of 2772	1952	TRNSF.exe	33
PID 1244 wrote to memory of 1828	1244	Explorer.EXE	34
PID 1244 wrote to memory of 1828	1244	Explorer.EXE	34
PID 1244 wrote to memory of 1828	1244	Explorer.EXE	34
PID 1244 wrote to memory of 1828	1244	Explorer.EXE	34
PID 1828 wrote to memory of 2300	1828	systray.exe	35
PID 1828 wrote to memory of 2300	1828	systray.exe	35
PID 1828 wrote to memory of 2300	1828	systray.exe	35
PID 1828 wrote to memory of 2300	1828	systray.exe	35

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1244
- C:\Users\Admin\AppData\Local\Temp\TRNSF.exe
  "C:\Users\Admin\AppData\Local\Temp\TRNSF.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1952
- - C:\Windows\SysWOW64\schtasks.exe
    "C:\Windows\System32\schtasks.exe" /Create /TN "Updates\CgGYkEzZSUvqy" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6BBE.tmp"
    3⤵
    - System Location Discovery: System Language Discovery
    - Scheduled Task/Job: Scheduled Task
    PID:2896
- - C:\Users\Admin\AppData\Local\Temp\TRNSF.exe
    "C:\Users\Admin\AppData\Local\Temp\TRNSF.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2772
- C:\Windows\SysWOW64\systray.exe
  "C:\Windows\SysWOW64\systray.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:1828
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\TRNSF.exe"
    3⤵
    - Deletes itself
    - System Location Discovery: System Language Discovery
    PID:2300

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Persistence

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

Privilege Escalation

Scheduled Task/Job

1

T1053

Scheduled Task

1

T1053.005

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

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6BBE.tmp

Filesize
1KB

MD5
269c4d234cae785e347d5d155b1d135a

SHA1
64af4b09aac8abf2241b5ed524c51a6731fbd1f7

SHA256
1076c93461415650854da81d072efa228261ff57c45932fb1fd7fbd6c71dcaed

SHA512
a087bcd04b4a8e6cb077f9f521c32e97fd70c5dfd2b03599a795db0fbda8b4cfb44da5bc579bca9ea398058663a16ff90a596186d39cf0e0aab1562d04e901b4

Download Submit
memory/1244-26-0x0000000006460000-0x0000000006562000-memory.dmp

Filesize
1.0MB

Download
memory/1244-29-0x0000000006460000-0x0000000006562000-memory.dmp

Filesize
1.0MB

Download
memory/1244-31-0x0000000000310000-0x0000000000410000-memory.dmp

Filesize
1024KB

Download
memory/1828-28-0x0000000000B80000-0x0000000000B85000-memory.dmp

Filesize
20KB

Download
memory/1828-27-0x0000000000B80000-0x0000000000B85000-memory.dmp

Filesize
20KB

Download
memory/1952-3-0x0000000000850000-0x0000000000866000-memory.dmp

Filesize
88KB

Download
memory/1952-7-0x0000000004880000-0x00000000048D6000-memory.dmp

Filesize
344KB

Download
memory/1952-6-0x0000000005A40000-0x0000000005AD2000-memory.dmp

Filesize
584KB

Download
memory/1952-5-0x0000000074050000-0x000000007473E000-memory.dmp

Filesize
6.9MB

Download
memory/1952-0-0x000000007405E000-0x000000007405F000-memory.dmp

Filesize
4KB

Download
memory/1952-4-0x000000007405E000-0x000000007405F000-memory.dmp

Filesize
4KB

Download
memory/1952-2-0x0000000074050000-0x000000007473E000-memory.dmp

Filesize
6.9MB

Download
memory/1952-21-0x0000000074050000-0x000000007473E000-memory.dmp

Filesize
6.9MB

Download
memory/1952-1-0x0000000000A20000-0x0000000000B36000-memory.dmp

Filesize
1.1MB

Download
memory/2772-17-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2772-24-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2772-25-0x0000000000180000-0x0000000000194000-memory.dmp

Filesize
80KB

Download
memory/2772-22-0x0000000000B40000-0x0000000000E43000-memory.dmp

Filesize
3.0MB

Download
memory/2772-13-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2772-15-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2772-20-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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