formbook | fd0acf8857407d61d176810f5d57f5fa93d4f018300ade165716eb0d38dbaf20

General

Target

SecuriteInfo.com.Variant.Tedy.121179.3350.exe
Size

800KB
MD5

7a77347dc5352b72b152a18db47580fd
SHA1

2dcc70d8e6ac88a030850543374a6e5baa256db2
SHA256

fd0acf8857407d61d176810f5d57f5fa93d4f018300ade165716eb0d38dbaf20
SHA512

65ae1783fc8950627cdb3ebecfe2435986707580b0d1d27b2a12c43d5983336fa36c105e5368740d9cad97e48cb4bec6cfa15d597550d9a1e5154050675a78c9

Score

10^/10

formbook xloader a8hq loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

a8hq

Decoy

veteransductcleaning.com

beajtjunkies.com

houseofascofi.com

scottsdalemediator.com

atelyadesign.com

profitcase.pro

imtokenio.club

qinglingpai.com

bigsmile-meal.net

daytonlivestream.com

aspiradores10.online

ytybs120.com

hdatelier.com

bearpierce.com

yeson28ca.com

booklearner.com

m8j9.club

mmophamthinhlegend.space

hq4a7o6zb.com

sophiadaki.online

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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4984-134-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4984-140-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4236-143-0x0000000000750000-0x000000000077B000-memory.dmp	xloader
behavioral2/memory/4236-147-0x0000000000750000-0x000000000077B000-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:

cmstp.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	cmstp.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\LBCX5NKPZDN = "C:\\Program Files (x86)\\Mlng\\1bexnbhzb80p.exe"	cmstp.exe

Executes dropped EXE 1 IoCs

Processes:

1bexnbhzb80p.exe

pid process

1544 1bexnbhzb80p.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

pid	process
1544	1bexnbhzb80p.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

SecuriteInfo.com.Variant.Tedy.121179.3350.exeLaunchWinApp.execmstp.exe

description	pid	process	target process
PID 2176 set thread context of 4984	2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe	LaunchWinApp.exe
PID 4984 set thread context of 2156	4984	LaunchWinApp.exe	Explorer.EXE
PID 4236 set thread context of 2156	4236	cmstp.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

Explorer.EXEcmstp.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Mlng\1bexnbhzb80p.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Mlng\1bexnbhzb80p.exe	cmstp.exe
File opened for modification	C:\Program Files (x86)\Mlng	Explorer.EXE
File created	C:\Program Files (x86)\Mlng\1bexnbhzb80p.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmstp.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1809750270-3141839489-3074374771-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 64 IoCs

Processes:

SecuriteInfo.com.Variant.Tedy.121179.3350.exeLaunchWinApp.execmstp.exe

pid	process
2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe
2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe
2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe
2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe
2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe
2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe
2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe
2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe
4984	LaunchWinApp.exe
4984	LaunchWinApp.exe
4984	LaunchWinApp.exe
4984	LaunchWinApp.exe
2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe
2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2156 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

LaunchWinApp.execmstp.exe

pid process

4984 LaunchWinApp.exe
4984 LaunchWinApp.exe
4984 LaunchWinApp.exe
4236 cmstp.exe
4236 cmstp.exe
4236 cmstp.exe
4236 cmstp.exe

pid	process
2156	Explorer.EXE

pid	process
4984	LaunchWinApp.exe
4984	LaunchWinApp.exe
4984	LaunchWinApp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe
4236	cmstp.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

SecuriteInfo.com.Variant.Tedy.121179.3350.exeLaunchWinApp.execmstp.exe

description	pid	process
Token: SeDebugPrivilege	2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe
Token: SeDebugPrivilege	4984	LaunchWinApp.exe
Token: SeDebugPrivilege	4236	cmstp.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

SecuriteInfo.com.Variant.Tedy.121179.3350.exeExplorer.EXEcmstp.exe

description	pid	process	target process
PID 2176 wrote to memory of 4984	2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe	LaunchWinApp.exe
PID 2176 wrote to memory of 4984	2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe	LaunchWinApp.exe
PID 2176 wrote to memory of 4984	2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe	LaunchWinApp.exe
PID 2176 wrote to memory of 4984	2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe	LaunchWinApp.exe
PID 2176 wrote to memory of 4984	2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe	LaunchWinApp.exe
PID 2176 wrote to memory of 4984	2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe	LaunchWinApp.exe
PID 2176 wrote to memory of 4984	2176	SecuriteInfo.com.Variant.Tedy.121179.3350.exe	LaunchWinApp.exe
PID 2156 wrote to memory of 4236	2156	Explorer.EXE	cmstp.exe
PID 2156 wrote to memory of 4236	2156	Explorer.EXE	cmstp.exe
PID 2156 wrote to memory of 4236	2156	Explorer.EXE	cmstp.exe
PID 4236 wrote to memory of 1956	4236	cmstp.exe	cmd.exe
PID 4236 wrote to memory of 1956	4236	cmstp.exe	cmd.exe
PID 4236 wrote to memory of 1956	4236	cmstp.exe	cmd.exe
PID 4236 wrote to memory of 4460	4236	cmstp.exe	cmd.exe
PID 4236 wrote to memory of 4460	4236	cmstp.exe	cmd.exe
PID 4236 wrote to memory of 4460	4236	cmstp.exe	cmd.exe
PID 4236 wrote to memory of 4884	4236	cmstp.exe	cmd.exe
PID 4236 wrote to memory of 4884	4236	cmstp.exe	cmd.exe
PID 4236 wrote to memory of 4884	4236	cmstp.exe	cmd.exe
PID 4236 wrote to memory of 3720	4236	cmstp.exe	Firefox.exe
PID 4236 wrote to memory of 3720	4236	cmstp.exe	Firefox.exe
PID 4236 wrote to memory of 3720	4236	cmstp.exe	Firefox.exe
PID 2156 wrote to memory of 1544	2156	Explorer.EXE	1bexnbhzb80p.exe
PID 2156 wrote to memory of 1544	2156	Explorer.EXE	1bexnbhzb80p.exe
PID 2156 wrote to memory of 1544	2156	Explorer.EXE	1bexnbhzb80p.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

cmstp.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer cmstp.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	cmstp.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2156

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Tedy.121179.3350.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.Variant.Tedy.121179.3350.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2176

C:\Windows\SysWOW64\LaunchWinApp.exe
"C:\Windows\SysWOW64\LaunchWinApp.exe"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4984

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:4252

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:4288

C:\Windows\SysWOW64\autochk.exe
"C:\Windows\SysWOW64\autochk.exe"
2⤵
PID:4220

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.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
- System policy modification
PID:4236

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\SysWOW64\LaunchWinApp.exe"
3⤵
PID:1956

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:4460

C:\Windows\SysWOW64\cmd.exe
/c copy "C:\Users\Admin\AppData\Local\Microsoft\Edge\User Data\Default\Login Data" "C:\Users\Admin\AppData\Local\Temp\DB1" /V
3⤵
PID:4884

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:3720

C:\Program Files (x86)\Mlng\1bexnbhzb80p.exe
"C:\Program Files (x86)\Mlng\1bexnbhzb80p.exe"
2⤵
- Executes dropped EXE
PID:1544

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

3

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\Mlng\1bexnbhzb80p.exe
Filesize
33KB

MD5
16cb90e344adbb5b46b091fc043c1650

SHA1
96bc2dd4aa3ab1b0111ed775bc246cffcee9c77c

SHA256
1a243bbee2ee87f894efa2bcd273392c2b0c88162a78541290b36e5ce312fa19

SHA512
b56d4a7ed081748aff3f3d21117723c0a44c6c6121ca80c1fda87be0f942905c93c3850f7c5273b6f3290de53c8adbb6fe1f28d7b48b9f44971b4d751949c94a

Download Submit
C:\Program Files (x86)\Mlng\1bexnbhzb80p.exe
Filesize
33KB

MD5
16cb90e344adbb5b46b091fc043c1650

SHA1
96bc2dd4aa3ab1b0111ed775bc246cffcee9c77c

SHA256
1a243bbee2ee87f894efa2bcd273392c2b0c88162a78541290b36e5ce312fa19

SHA512
b56d4a7ed081748aff3f3d21117723c0a44c6c6121ca80c1fda87be0f942905c93c3850f7c5273b6f3290de53c8adbb6fe1f28d7b48b9f44971b4d751949c94a

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
40KB

MD5
b608d407fc15adea97c26936bc6f03f6

SHA1
953e7420801c76393902c0d6bb56148947e41571

SHA256
b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf

SHA512
cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4

Download Submit
C:\Users\Admin\AppData\Local\Temp\DB1
Filesize
48KB

MD5
349e6eb110e34a08924d92f6b334801d

SHA1
bdfb289daff51890cc71697b6322aa4b35ec9169

SHA256
c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a

SHA512
2a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574

Download Submit
memory/1544-153-0x0000000000000000-mapping.dmp

Download
memory/1956-144-0x0000000000000000-mapping.dmp

Download
memory/2156-138-0x00000000029E0000-0x0000000002B42000-memory.dmp

Filesize
1.4MB

Download
memory/2156-148-0x0000000007710000-0x000000000781E000-memory.dmp

Filesize
1.1MB

Download
memory/2156-146-0x0000000007710000-0x000000000781E000-memory.dmp

Filesize
1.1MB

Download
memory/2176-131-0x0000000005690000-0x0000000005C34000-memory.dmp

Filesize
5.6MB

Download
memory/2176-132-0x0000000005180000-0x0000000005212000-memory.dmp

Filesize
584KB

Download
memory/2176-130-0x00000000008D0000-0x000000000099E000-memory.dmp

Filesize
824KB

Download
memory/4236-139-0x0000000000000000-mapping.dmp

Download
memory/4236-143-0x0000000000750000-0x000000000077B000-memory.dmp

Filesize
172KB

Download
memory/4236-145-0x0000000000CD0000-0x0000000000D60000-memory.dmp

Filesize
576KB

Download
memory/4236-142-0x0000000002990000-0x0000000002CDA000-memory.dmp

Filesize
3.3MB

Download
memory/4236-147-0x0000000000750000-0x000000000077B000-memory.dmp

Filesize
172KB

Download
memory/4236-141-0x0000000000AF0000-0x0000000000B06000-memory.dmp

Filesize
88KB

Download
memory/4460-149-0x0000000000000000-mapping.dmp

Download
memory/4884-151-0x0000000000000000-mapping.dmp

Download
memory/4984-140-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4984-137-0x0000000000EF0000-0x0000000000F01000-memory.dmp

Filesize
68KB

Download
memory/4984-136-0x00000000013C0000-0x000000000170A000-memory.dmp

Filesize
3.3MB

Download
memory/4984-134-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4984-133-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads