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-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	formbook4.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	formbook4.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

formbook4.exeformbook4.exemstsc.exe

description	pid	process	target process
PID 3440 set thread context of 4664	3440	formbook4.exe	formbook4.exe
PID 4664 set thread context of 3052	4664	formbook4.exe	Explorer.EXE
PID 4200 set thread context of 3052	4200	mstsc.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

3876 schtasks.exe

pid	process
3876	schtasks.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

mstsc.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	mstsc.exe

Suspicious behavior: EnumeratesProcesses 39 IoCs

Processes:

formbook4.exepowershell.exeformbook4.exemstsc.exe

pid	process
3440	formbook4.exe
3440	formbook4.exe
3440	formbook4.exe
1124	powershell.exe
4664	formbook4.exe
4664	formbook4.exe
4664	formbook4.exe
4664	formbook4.exe
4664	formbook4.exe
4664	formbook4.exe
4664	formbook4.exe
4664	formbook4.exe
1124	powershell.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3052 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

formbook4.exemstsc.exe

pid process

4664 formbook4.exe
4664 formbook4.exe
4664 formbook4.exe
4200 mstsc.exe
4200 mstsc.exe
4200 mstsc.exe
4200 mstsc.exe

pid	process
3052	Explorer.EXE

pid	process
4664	formbook4.exe
4664	formbook4.exe
4664	formbook4.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe
4200	mstsc.exe

Suspicious use of AdjustPrivilegeToken 6 IoCs

Processes:

formbook4.exepowershell.exeformbook4.exemstsc.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	3440	formbook4.exe
Token: SeDebugPrivilege	1124	powershell.exe
Token: SeDebugPrivilege	4664	formbook4.exe
Token: SeDebugPrivilege	4200	mstsc.exe
Token: SeShutdownPrivilege	3052	Explorer.EXE
Token: SeCreatePagefilePrivilege	3052	Explorer.EXE

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

formbook4.exeExplorer.EXEmstsc.exe

description	pid	process	target process
PID 3440 wrote to memory of 1124	3440	formbook4.exe	powershell.exe
PID 3440 wrote to memory of 1124	3440	formbook4.exe	powershell.exe
PID 3440 wrote to memory of 1124	3440	formbook4.exe	powershell.exe
PID 3440 wrote to memory of 3876	3440	formbook4.exe	schtasks.exe
PID 3440 wrote to memory of 3876	3440	formbook4.exe	schtasks.exe
PID 3440 wrote to memory of 3876	3440	formbook4.exe	schtasks.exe
PID 3440 wrote to memory of 4664	3440	formbook4.exe	formbook4.exe
PID 3440 wrote to memory of 4664	3440	formbook4.exe	formbook4.exe
PID 3440 wrote to memory of 4664	3440	formbook4.exe	formbook4.exe
PID 3440 wrote to memory of 4664	3440	formbook4.exe	formbook4.exe
PID 3440 wrote to memory of 4664	3440	formbook4.exe	formbook4.exe
PID 3440 wrote to memory of 4664	3440	formbook4.exe	formbook4.exe
PID 3052 wrote to memory of 4200	3052	Explorer.EXE	mstsc.exe
PID 3052 wrote to memory of 4200	3052	Explorer.EXE	mstsc.exe
PID 3052 wrote to memory of 4200	3052	Explorer.EXE	mstsc.exe
PID 4200 wrote to memory of 1660	4200	mstsc.exe	Firefox.exe
PID 4200 wrote to memory of 1660	4200	mstsc.exe	Firefox.exe
PID 4200 wrote to memory of 1660	4200	mstsc.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3052

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:3440

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:1124

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\vwzBruALhhNkob" /XML "C:\Users\Admin\AppData\Local\Temp\tmp6C13.tmp"
3⤵
- Creates scheduled task(s)
PID:3876

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:4664

C:\Windows\SysWOW64\mstsc.exe
"C:\Windows\SysWOW64\mstsc.exe"
2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4200

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:1660

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

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmp6C13.tmp
Filesize
1KB

MD5
ff8df213c9c7f3d6b075bee099ca15ff

SHA1
2840f03c5be07ba2073d45dfe2d209d448f94fa1

SHA256
6281978fe2ab50b7b3187c242c31064c3b5f1622215736072e9ea4195a44676d

SHA512
b989a823c74261f27c2bf42da060cdc90ecebfbba8a40dcd744f73c05af195138b357072ecafe10253c6e5e7adb2d8ab3eb6b106a6476d0a2c11b47c803034c3

Download Submit
memory/1124-173-0x0000000007600000-0x000000000761A000-memory.dmp

Filesize
104KB

Download
memory/1124-142-0x00000000050E0000-0x0000000005708000-memory.dmp

Filesize
6.2MB

Download
memory/1124-148-0x0000000004EF0000-0x0000000004F12000-memory.dmp

Filesize
136KB

Download
memory/1124-169-0x00000000072C0000-0x00000000072CA000-memory.dmp

Filesize
40KB

Download
memory/1124-172-0x00000000074F0000-0x00000000074FE000-memory.dmp

Filesize
56KB

Download
memory/1124-138-0x0000000000000000-mapping.dmp

Download
memory/1124-163-0x00000000064E0000-0x00000000064FE000-memory.dmp

Filesize
120KB

Download
memory/1124-140-0x0000000002580000-0x00000000025B6000-memory.dmp

Filesize
216KB

Download
memory/1124-166-0x00000000078D0000-0x0000000007F4A000-memory.dmp

Filesize
6.5MB

Download
memory/1124-170-0x0000000007540000-0x00000000075D6000-memory.dmp

Filesize
600KB

Download
memory/1124-174-0x00000000075E0000-0x00000000075E8000-memory.dmp

Filesize
32KB

Download
memory/1124-161-0x0000000006500000-0x0000000006532000-memory.dmp

Filesize
200KB

Download
memory/1124-162-0x0000000070690000-0x00000000706DC000-memory.dmp

Filesize
304KB

Download
memory/1124-157-0x0000000005F30000-0x0000000005F4E000-memory.dmp

Filesize
120KB

Download
memory/1124-167-0x0000000007250000-0x000000000726A000-memory.dmp

Filesize
104KB

Download
memory/1124-150-0x0000000005810000-0x0000000005876000-memory.dmp

Filesize
408KB

Download
memory/3052-168-0x0000000008520000-0x000000000866C000-memory.dmp

Filesize
1.3MB

Download
memory/3052-171-0x0000000008520000-0x000000000866C000-memory.dmp

Filesize
1.3MB

Download
memory/3052-153-0x00000000082C0000-0x0000000008412000-memory.dmp

Filesize
1.3MB

Download
memory/3440-135-0x0000000004C10000-0x0000000004C1A000-memory.dmp

Filesize
40KB

Download
memory/3440-132-0x0000000000170000-0x000000000027C000-memory.dmp

Filesize
1.0MB

Download
memory/3440-136-0x0000000008F90000-0x000000000902C000-memory.dmp

Filesize
624KB

Download
memory/3440-134-0x0000000004CA0000-0x0000000004D32000-memory.dmp

Filesize
584KB

Download
memory/3440-133-0x0000000005310000-0x00000000058B4000-memory.dmp

Filesize
5.6MB

Download
memory/3440-137-0x0000000009030000-0x0000000009096000-memory.dmp

Filesize
408KB

Download
memory/3876-139-0x0000000000000000-mapping.dmp

Download
memory/4200-154-0x0000000000000000-mapping.dmp

Download
memory/4200-160-0x0000000002F60000-0x00000000032AA000-memory.dmp

Filesize
3.3MB

Download
memory/4200-158-0x0000000000AC0000-0x0000000000BFA000-memory.dmp

Filesize
1.2MB

Download
memory/4200-164-0x0000000001050000-0x000000000107D000-memory.dmp

Filesize
180KB

Download
memory/4200-165-0x00000000032B0000-0x000000000333F000-memory.dmp

Filesize
572KB

Download
memory/4200-159-0x0000000001050000-0x000000000107D000-memory.dmp

Filesize
180KB

Download
memory/4664-155-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4664-156-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/4664-152-0x0000000000FF0000-0x0000000001000000-memory.dmp

Filesize
64KB

Download
memory/4664-151-0x0000000001A30000-0x0000000001D7A000-memory.dmp

Filesize
3.3MB

Download
memory/4664-147-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/4664-146-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4664-144-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4664-143-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads