formbook | 1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969

Analysis

max time kernel
149s
max time network
149s
platform
windows10_x64
resource
win10-20220414-en
submitted
21-06-2022 07:29

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General

Target

1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.exe
Size

303KB
MD5

bef72eb124931f8e96965b4e5062605c
SHA1

f2f7fb4c3c0d130dfec7ede1efa1b5187b759ede
SHA256

1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969
SHA512

3d8dd5304f53744a82ab9d01e98bdf776dab77507255f81c1a9d377c3a56c440a5c69b01de7dc7d24671a6b287b9a7cc9a57828ffa371b09f22ea0203ca4556a

Score

10^/10

formbook xloader mt88 loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

mt88

Decoy

syzbf32.xyz

pertlines.com

vybaveniprocyklostezky.com

elianmsalas.tech

a-snag-tokei-kaitori.com

tuvistaing.com

whoyoucall.net

l8e9gr.xyz

sophrologuemontevrain77.com

ciclean.com

the-roel.com

campgreencove.com

foremostbookkeeping.com

zamanscorner.com

efeturozemniyet.com

penelope.team

murata.life

solfuls.com

tradefitinvesting.com

skinbid.pro

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Xloader
Xloader is a rebranded version of Formbook malware.
loader xloader
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata

Xloader Payload 5 IoCs

rat

Processes:

resource	yara_rule
behavioral1/memory/4068-164-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/4068-165-0x000000000041F2C0-mapping.dmp	xloader
behavioral1/memory/4068-195-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral1/memory/1584-253-0x0000000000840000-0x000000000086B000-memory.dmp	xloader
behavioral1/memory/1584-256-0x0000000000840000-0x000000000086B000-memory.dmp	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	explorer.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\WFOPL2EHZD = "C:\\Program Files (x86)\\M_xd07b\\vgauxl4.exe"	explorer.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 3 IoCs

Processes:

1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.execvtres.exeexplorer.exe

description	pid	process	target process
PID 1120 set thread context of 4068	1120	1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.exe	cvtres.exe
PID 4068 set thread context of 2852	4068	cvtres.exe	Explorer.EXE
PID 1584 set thread context of 2852	1584	explorer.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

explorer.exe

description ioc process

File opened for modification C:\Program Files (x86)\M_xd07b\vgauxl4.exe explorer.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\M_xd07b\vgauxl4.exe	explorer.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

explorer.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1804997378-2045782378-3882459628-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	explorer.exe

Suspicious behavior: EnumeratesProcesses 44 IoCs

Processes:

cvtres.exeexplorer.exe

pid	process
4068	cvtres.exe
4068	cvtres.exe
4068	cvtres.exe
4068	cvtres.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe
1584	explorer.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2852 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

cvtres.exeexplorer.exe

pid process

4068 cvtres.exe
4068 cvtres.exe
4068 cvtres.exe
1584 explorer.exe
1584 explorer.exe
1584 explorer.exe
1584 explorer.exe

pid	process
2852	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.execvtres.exeexplorer.exe

description	pid	process
Token: SeDebugPrivilege	1120	1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.exe
Token: SeDebugPrivilege	4068	cvtres.exe
Token: SeDebugPrivilege	1584	explorer.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.exeExplorer.EXEexplorer.exe

description	pid	process	target process
PID 1120 wrote to memory of 4068	1120	1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.exe	cvtres.exe
PID 1120 wrote to memory of 4068	1120	1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.exe	cvtres.exe
PID 1120 wrote to memory of 4068	1120	1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.exe	cvtres.exe
PID 1120 wrote to memory of 4068	1120	1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.exe	cvtres.exe
PID 1120 wrote to memory of 4068	1120	1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.exe	cvtres.exe
PID 1120 wrote to memory of 4068	1120	1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.exe	cvtres.exe
PID 2852 wrote to memory of 1584	2852	Explorer.EXE	explorer.exe
PID 2852 wrote to memory of 1584	2852	Explorer.EXE	explorer.exe
PID 2852 wrote to memory of 1584	2852	Explorer.EXE	explorer.exe
PID 1584 wrote to memory of 216	1584	explorer.exe	cmd.exe
PID 1584 wrote to memory of 216	1584	explorer.exe	cmd.exe
PID 1584 wrote to memory of 216	1584	explorer.exe	cmd.exe
PID 1584 wrote to memory of 3980	1584	explorer.exe	cmd.exe
PID 1584 wrote to memory of 3980	1584	explorer.exe	cmd.exe
PID 1584 wrote to memory of 3980	1584	explorer.exe	cmd.exe
PID 1584 wrote to memory of 2400	1584	explorer.exe	Firefox.exe
PID 1584 wrote to memory of 2400	1584	explorer.exe	Firefox.exe
PID 1584 wrote to memory of 2400	1584	explorer.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2852

C:\Users\Admin\AppData\Local\Temp\1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.exe
"C:\Users\Admin\AppData\Local\Temp\1bec941f244d3f69b90f2b3166509ccffdfb11959003f53c1ef097beaf4a0969.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1120

C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe
"C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4068

C:\Windows\SysWOW64\explorer.exe
"C:\Windows\SysWOW64\explorer.exe"
2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1584

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
3⤵
PID:216

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Google\Chrome\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:3980

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:2400

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

T1060

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\DB1

Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
memory/216-246-0x0000000000000000-mapping.dmp

Download
memory/1120-157-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-119-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-121-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-122-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-123-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-124-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-125-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-126-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-127-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-128-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-129-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-130-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-131-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-132-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-133-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-134-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-135-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-136-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-137-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-138-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-139-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-140-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-141-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-142-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-143-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-144-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-145-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-146-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-147-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-148-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-149-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-150-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-151-0x0000000000610000-0x0000000000662000-memory.dmp

Filesize
328KB

Download
memory/1120-152-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-153-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-154-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-155-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-156-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-160-0x0000000004DC0000-0x0000000004DF4000-memory.dmp

Filesize
208KB

Download
memory/1120-118-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-120-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-161-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-163-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-162-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-159-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-167-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1120-158-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/1584-194-0x0000000000000000-mapping.dmp

Download
memory/1584-259-0x0000000000CA0000-0x0000000000DD6000-memory.dmp

Filesize
1.2MB

Download
memory/1584-257-0x0000000000CA0000-0x0000000000DD6000-memory.dmp

Filesize
1.2MB

Download
memory/1584-256-0x0000000000840000-0x000000000086B000-memory.dmp

Filesize
172KB

Download
memory/1584-252-0x0000000000E50000-0x000000000128F000-memory.dmp

Filesize
4.2MB

Download
memory/1584-254-0x0000000004D70000-0x0000000005090000-memory.dmp

Filesize
3.1MB

Download
memory/1584-253-0x0000000000840000-0x000000000086B000-memory.dmp

Filesize
172KB

Download
memory/2852-193-0x0000000002470000-0x0000000002542000-memory.dmp

Filesize
840KB

Download
memory/2852-260-0x00000000041B0000-0x0000000004267000-memory.dmp

Filesize
732KB

Download
memory/2852-258-0x00000000041B0000-0x0000000004267000-memory.dmp

Filesize
732KB

Download
memory/3980-278-0x0000000000000000-mapping.dmp

Download
memory/4068-182-0x00000000059A0000-0x0000000005CC0000-memory.dmp

Filesize
3.1MB

Download
memory/4068-175-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-178-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-179-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-165-0x000000000041F2C0-mapping.dmp

Download
memory/4068-169-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-173-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-184-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-185-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-187-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-176-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-177-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-172-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-170-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-181-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-166-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-168-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-180-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-164-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/4068-186-0x00000000775D0000-0x000000007775E000-memory.dmp

Filesize
1.6MB

Download
memory/4068-192-0x0000000005800000-0x0000000005996000-memory.dmp

Filesize
1.6MB

Download
memory/4068-195-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download