formbook | 502751e0b4a8acff074def25e8bf46495cc258100652ae11194aea84b5278fcf

General

Target

formbook4.exe
Size

1.0MB
MD5

e434c99075bb1cc365706ac25bc1c53a
SHA1

4cbc665703ef6c5eb46608aa5b8fef42c6afe6f5
SHA256

f50fd444e689593c2b29b62961986f31fe2b61f28850d23680aab7671add1365
SHA512

a6de56271d64f1ec3c4049faaeb99b7822f22b0acb6716a5ac52f7726d6278724d3110361cf13b63d441af01c3668dcde727a3ba322af17e00b33b0b0abb4610
SSDEEP

24576:bpxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxNuss8gPkS3k:23cj+/ZEFdj

Score

10^/10

formbook 5pdf rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

5pdf

Decoy

cnoOEQHsI9ejYIEif1HquIlIogYo8Ow=

+pAzTzDtpZpp

djD/KBrcDAYQyOGt+Us+fA==

EJM2X0tTvNKodx36

86lMWj8hSQvtqtamtDE6kbKCy3c=

/ywYVB9fxjhRAg==

0OZ0eaYoArZ0

Kl0MifS5n1TXmIQBZLE=

2eN+GpZbBAJDAg==

E8OdZbo7E5cuJgSu2JNUfg==

wXQeNSUaXiXts3xLPw==

PzLRe+HePPeJJB8PJw==

BPaaT7LANzqtcROc+Us+fA==

/vB5AHAzcWtvN1TtGCkZ2L47OjGmU8RrWQ==

gwSl0rcfM/O7hCE=

NrtIzTsH96xB8a3HBhbfMkCs

bxu1vLuDaipA5w0OVuBc8Mw=

2IRJAE05bSVR4Oj7UeBc8Mw=

kQuq4sSpB/7gs3xLPw==

iqhd2Ea725sBlSE=

Signatures

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

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

formbook4.exeformbook4.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	formbook4.exe
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	formbook4.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

formbook4.exeformbook4.exe

description	pid	process	target process
PID 4940 set thread context of 1328	4940	formbook4.exe	formbook4.exe
PID 1328 set thread context of 752	1328	formbook4.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

4964 schtasks.exe

pid	process
4964	schtasks.exe

Suspicious behavior: EnumeratesProcesses 35 IoCs

Processes:

formbook4.exepowershell.exeformbook4.exewscript.exe

pid	process
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
4940	formbook4.exe
1464	powershell.exe
1328	formbook4.exe
1328	formbook4.exe
1328	formbook4.exe
1328	formbook4.exe
1328	formbook4.exe
1328	formbook4.exe
1328	formbook4.exe
1328	formbook4.exe
1464	powershell.exe
3468	wscript.exe
3468	wscript.exe
3468	wscript.exe
3468	wscript.exe

Suspicious behavior: MapViewOfSection 4 IoCs

Processes:

formbook4.exewscript.exe

pid process

1328 formbook4.exe
1328 formbook4.exe
1328 formbook4.exe
3468 wscript.exe

pid	process
1328	formbook4.exe
1328	formbook4.exe
1328	formbook4.exe
3468	wscript.exe

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

formbook4.exepowershell.exeformbook4.exewscript.exe

description	pid	process
Token: SeDebugPrivilege	4940	formbook4.exe
Token: SeDebugPrivilege	1464	powershell.exe
Token: SeDebugPrivilege	1328	formbook4.exe
Token: SeDebugPrivilege	3468	wscript.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

formbook4.exeExplorer.EXE

description	pid	process	target process
PID 4940 wrote to memory of 1464	4940	formbook4.exe	powershell.exe
PID 4940 wrote to memory of 1464	4940	formbook4.exe	powershell.exe
PID 4940 wrote to memory of 1464	4940	formbook4.exe	powershell.exe
PID 4940 wrote to memory of 4964	4940	formbook4.exe	schtasks.exe
PID 4940 wrote to memory of 4964	4940	formbook4.exe	schtasks.exe
PID 4940 wrote to memory of 4964	4940	formbook4.exe	schtasks.exe
PID 4940 wrote to memory of 1328	4940	formbook4.exe	formbook4.exe
PID 4940 wrote to memory of 1328	4940	formbook4.exe	formbook4.exe
PID 4940 wrote to memory of 1328	4940	formbook4.exe	formbook4.exe
PID 4940 wrote to memory of 1328	4940	formbook4.exe	formbook4.exe
PID 4940 wrote to memory of 1328	4940	formbook4.exe	formbook4.exe
PID 4940 wrote to memory of 1328	4940	formbook4.exe	formbook4.exe
PID 752 wrote to memory of 3468	752	Explorer.EXE	wscript.exe
PID 752 wrote to memory of 3468	752	Explorer.EXE	wscript.exe
PID 752 wrote to memory of 3468	752	Explorer.EXE	wscript.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:752

C:\Users\Admin\AppData\Local\Temp\formbook4.exe
"C:\Users\Admin\AppData\Local\Temp\formbook4.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4940

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" Add-MpPreference -ExclusionPath "C:\Users\Admin\AppData\Roaming\vwzBruALhhNkob.exe"
3⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1464

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vwzBruALhhNkob" /XML "C:\Users\Admin\AppData\Local\Temp\tmpAA93.tmp"
3⤵
- Creates scheduled task(s)
PID:4964

C:\Users\Admin\AppData\Local\Temp\formbook4.exe
"C:\Users\Admin\AppData\Local\Temp\formbook4.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1328

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:3524

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:2592

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:4020

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:3140

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:684

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:748

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:3888

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:4284

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:3824

C:\Windows\SysWOW64\autoconv.exe
"C:\Windows\SysWOW64\autoconv.exe"
2⤵
PID:3568

C:\Windows\SysWOW64\wscript.exe
"C:\Windows\SysWOW64\wscript.exe"
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3468

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

C:\Users\Admin\AppData\Local\Temp\tmpAA93.tmp
Filesize
1KB

MD5
a78068e60adffe2e52c9dd44ea18d022

SHA1
8a27edfac0a8d6a84ba4a1be8f2871e386c2de06

SHA256
8a3f0527c87d6c15362aa5ccf7b4df0aa0a36503c9b19c36329a7962fdc787f9

SHA512
e37357b52e7784bec4b662966b37a77dbc53b8a98a4931906853034ed04aeb2be0093506b5ae0ac435ff4dd67bfcf0c51a2a06737e6478afe693910fad1cd7ed

Download Submit
memory/752-153-0x0000000008D10000-0x0000000008E64000-memory.dmp

Filesize
1.3MB

Download
memory/1328-152-0x00000000012A0000-0x00000000012B0000-memory.dmp

Filesize
64KB

Download
memory/1328-143-0x0000000000000000-mapping.dmp

Download
memory/1328-147-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1328-157-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/1328-148-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/1328-156-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1328-151-0x0000000001720000-0x0000000001A6A000-memory.dmp

Filesize
3.3MB

Download
memory/1328-144-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1464-138-0x0000000000000000-mapping.dmp

Download
memory/1464-154-0x0000000005F40000-0x0000000005F5E000-memory.dmp

Filesize
120KB

Download
memory/1464-149-0x00000000051A0000-0x0000000005206000-memory.dmp

Filesize
408KB

Download
memory/1464-146-0x00000000050F0000-0x0000000005112000-memory.dmp

Filesize
136KB

Download
memory/1464-140-0x0000000002830000-0x0000000002866000-memory.dmp

Filesize
216KB

Download
memory/1464-142-0x0000000005260000-0x0000000005888000-memory.dmp

Filesize
6.2MB

Download
memory/3468-159-0x00000000011A0000-0x00000000011CD000-memory.dmp

Filesize
180KB

Download
memory/3468-160-0x0000000003230000-0x000000000357A000-memory.dmp

Filesize
3.3MB

Download
memory/3468-158-0x0000000000AD0000-0x0000000000AF7000-memory.dmp

Filesize
156KB

Download
memory/3468-155-0x0000000000000000-mapping.dmp

Download
memory/4940-133-0x00000000053A0000-0x0000000005944000-memory.dmp

Filesize
5.6MB

Download
memory/4940-132-0x0000000000240000-0x000000000034C000-memory.dmp

Filesize
1.0MB

Download
memory/4940-137-0x00000000092E0000-0x0000000009346000-memory.dmp

Filesize
408KB

Download
memory/4940-134-0x0000000004F90000-0x0000000005022000-memory.dmp

Filesize
584KB

Download
memory/4940-135-0x0000000004F70000-0x0000000004F7A000-memory.dmp

Filesize
40KB

Download
memory/4940-136-0x0000000004720000-0x00000000047BC000-memory.dmp

Filesize
624KB

Download
memory/4964-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

Replay Monitor

Loading Replay Monitor...

Downloads