formbook | 54d9e41dc860087321eb979b18858f109d7d45c73da540a19d343fc17cce8ccb

General

Target

yeni sipari?.exe
Size

648KB
MD5

9db7619bc23ec15cc6863948515acc4e
SHA1

90e5b2e78d2bcc1f6d78ff9bfd9e1ca16b94c605
SHA256

c2100ac52466885fcb64010897d0c7a4178a5c00c47e13261f66976b38f26aaf
SHA512

6676f9434bc4e2f2fe3e256a328554162020e156c576b63eaa7ec2f79f834ecf967610c1dace77f1931f0fd2110aafff656eabe20a76bda8b610e06cbe27cf62

Score

10^/10

formbook kvsz rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

kvsz

Decoy

okashyns.com

sbsgamedaejeon-two.com

drb77.com

top5dating.com

websprings.online

voizers.com

zenith.site

lahistoriade.com

qv85.com

armandonieto.com

priestvedic.com

jessandjeff.net

magic-desktop.com

jitaji.com

ldmeili.com

yuwanqingmy.com

buzhouorg.com

chaiseloungereviews.com

m2g8way.com

freespin-support.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/2388-139-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral2/memory/2068-146-0x0000000000C00000-0x0000000000C2E000-memory.dmp	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

Processes:

yeni sipari_.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	yeni sipari_.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

yeni sipari_.exeRegSvcs.exenetsh.exe

description	pid	process	target process
PID 1824 set thread context of 2388	1824	yeni sipari_.exe	RegSvcs.exe
PID 2388 set thread context of 3140	2388	RegSvcs.exe	Explorer.EXE
PID 2068 set thread context of 3140	2068	netsh.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

1740 schtasks.exe

pid	process
1740	schtasks.exe

Suspicious behavior: EnumeratesProcesses 41 IoCs

Processes:

yeni sipari_.exeRegSvcs.exenetsh.exe

pid	process
1824	yeni sipari_.exe
1824	yeni sipari_.exe
1824	yeni sipari_.exe
1824	yeni sipari_.exe
1824	yeni sipari_.exe
1824	yeni sipari_.exe
1824	yeni sipari_.exe
1824	yeni sipari_.exe
1824	yeni sipari_.exe
2388	RegSvcs.exe
2388	RegSvcs.exe
2388	RegSvcs.exe
2388	RegSvcs.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe
2068	netsh.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3140 Explorer.EXE
Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

RegSvcs.exenetsh.exe

pid process

2388 RegSvcs.exe
2388 RegSvcs.exe
2388 RegSvcs.exe
2068 netsh.exe
2068 netsh.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

yeni sipari_.exeRegSvcs.exenetsh.exe

description pid process

Token: SeDebugPrivilege 1824 yeni sipari_.exe
Token: SeDebugPrivilege 2388 RegSvcs.exe
Token: SeDebugPrivilege 2068 netsh.exe

pid	process
3140	Explorer.EXE

pid	process
2388	RegSvcs.exe
2388	RegSvcs.exe
2388	RegSvcs.exe
2068	netsh.exe
2068	netsh.exe

description	pid	process
Token: SeDebugPrivilege	1824	yeni sipari_.exe
Token: SeDebugPrivilege	2388	RegSvcs.exe
Token: SeDebugPrivilege	2068	netsh.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

yeni sipari_.exeExplorer.EXEnetsh.exe

description	pid	process	target process
PID 1824 wrote to memory of 1740	1824	yeni sipari_.exe	schtasks.exe
PID 1824 wrote to memory of 1740	1824	yeni sipari_.exe	schtasks.exe
PID 1824 wrote to memory of 1740	1824	yeni sipari_.exe	schtasks.exe
PID 1824 wrote to memory of 2624	1824	yeni sipari_.exe	RegSvcs.exe
PID 1824 wrote to memory of 2624	1824	yeni sipari_.exe	RegSvcs.exe
PID 1824 wrote to memory of 2624	1824	yeni sipari_.exe	RegSvcs.exe
PID 1824 wrote to memory of 2388	1824	yeni sipari_.exe	RegSvcs.exe
PID 1824 wrote to memory of 2388	1824	yeni sipari_.exe	RegSvcs.exe
PID 1824 wrote to memory of 2388	1824	yeni sipari_.exe	RegSvcs.exe
PID 1824 wrote to memory of 2388	1824	yeni sipari_.exe	RegSvcs.exe
PID 1824 wrote to memory of 2388	1824	yeni sipari_.exe	RegSvcs.exe
PID 1824 wrote to memory of 2388	1824	yeni sipari_.exe	RegSvcs.exe
PID 3140 wrote to memory of 2068	3140	Explorer.EXE	netsh.exe
PID 3140 wrote to memory of 2068	3140	Explorer.EXE	netsh.exe
PID 3140 wrote to memory of 2068	3140	Explorer.EXE	netsh.exe
PID 2068 wrote to memory of 3804	2068	netsh.exe	cmd.exe
PID 2068 wrote to memory of 3804	2068	netsh.exe	cmd.exe
PID 2068 wrote to memory of 3804	2068	netsh.exe	cmd.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3140

C:\Users\Admin\AppData\Local\Temp\yeni sipari_.exe
"C:\Users\Admin\AppData\Local\Temp\yeni sipari_.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1824

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\&startupname&" /XML "C:\Users\Admin\AppData\Local\Temp\tmpEB4A.tmp"
3⤵
- Creates scheduled task(s)
PID:1740

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
3⤵
PID:2624

C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2388

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\SysWOW64\netsh.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2068

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegSvcs.exe"
3⤵
PID:3804

Network

MITRE ATT&CK Matrix ATT&CK 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

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\tmpEB4A.tmp
Filesize
1KB

MD5
072541fbcc0f05e7e00afb8876087822

SHA1
0a1a6ad25a4a546520fe21bed23b4dd56f5ea7f5

SHA256
8a98b2e2084e096028123a79228bc1b11f12179aecfbe53759b3e0805f973116

SHA512
07074f512ee920a787af3d49d982795121051cc5cd1ce01d115aab63cd800fd58f2f57e73dafb96151e57ada9d2e407e370abc9c56d8ab604d118dad93c1412d

Download Submit
memory/1740-135-0x0000000000000000-mapping.dmp

Download
memory/1824-130-0x0000000000620000-0x00000000006C8000-memory.dmp

Filesize
672KB

Download
memory/1824-131-0x00000000059D0000-0x0000000005F74000-memory.dmp

Filesize
5.6MB

Download
memory/1824-132-0x0000000005140000-0x00000000051D2000-memory.dmp

Filesize
584KB

Download
memory/1824-133-0x0000000005100000-0x000000000510A000-memory.dmp

Filesize
40KB

Download
memory/1824-134-0x0000000008C20000-0x0000000008CBC000-memory.dmp

Filesize
624KB

Download
memory/2068-146-0x0000000000C00000-0x0000000000C2E000-memory.dmp

Filesize
184KB

Download
memory/2068-144-0x0000000000000000-mapping.dmp

Download
memory/2068-145-0x0000000001540000-0x000000000155E000-memory.dmp

Filesize
120KB

Download
memory/2068-148-0x0000000001720000-0x0000000001A6A000-memory.dmp

Filesize
3.3MB

Download
memory/2068-149-0x00000000012F0000-0x0000000001383000-memory.dmp

Filesize
588KB

Download
memory/2388-138-0x0000000000000000-mapping.dmp

Download
memory/2388-139-0x0000000000400000-0x000000000042E000-memory.dmp

Filesize
184KB

Download
memory/2388-141-0x00000000018A0000-0x0000000001BEA000-memory.dmp

Filesize
3.3MB

Download
memory/2388-142-0x0000000001840000-0x0000000001854000-memory.dmp

Filesize
80KB

Download
memory/2624-137-0x0000000000000000-mapping.dmp

Download
memory/3140-143-0x0000000007E30000-0x0000000007FDB000-memory.dmp

Filesize
1.7MB

Download
memory/3140-150-0x0000000002F30000-0x0000000003090000-memory.dmp

Filesize
1.4MB

Download
memory/3804-147-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads