formbook | a7c1f4ae5c35b88e68b4d82db4c7e14d53922946d853569b5efd5050e7480229

Analysis

max time kernel
150s
max time network
149s
platform
windows10-2004_x64
resource
win10v2004-20220901-en
resource tags

arch:x64arch:x86image:win10v2004-20220901-enlocale:en-usos:windows10-2004-x64system
submitted
02-09-2022 03:27

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General

Target

43.exe
Size

180KB
MD5

4655391b02be2427e3f1985ec687678b
SHA1

6c05c1d258e3dfddd7b10053ab7d5574720678f7
SHA256

8ff8e3b32d53e0c28d01f3487add2a6f12cbb493449b401382951b02c06777f0
SHA512

2b0411b8478a39bec3dec6abe0c3e522f95a90addbbd2bde9bbda25779aba3abbcef926134b7cc746c7811bcda7e6a9192b1bc56efbbf047a9fd93bbd2e4c661
SSDEEP

3072:MT2jRLlS/s+YDWhRW08JgsJZUzjsL54hdiNYKgd9m7YapOW:Fjpo3Yn08J7jUPi54hdtM7j

Score

10^/10

formbook xloader loader persistence rat spyware stealer trojan

Malware Config

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

Xloader payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral11/memory/1588-137-0x00000000003C0000-0x00000000003ED000-memory.dmp	xloader
behavioral11/memory/1588-142-0x00000000003C0000-0x00000000003ED000-memory.dmp	xloader

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:

43.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation 43.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

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	43.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

raserver.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	raserver.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\ZX9L_RD8ZT = "C:\\Program Files (x86)\\Bvlqxb\\config4h8tvf.exe"	raserver.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

43.exeraserver.exe

description	pid	process	target process
PID 4704 set thread context of 2056	4704	43.exe	Explorer.EXE
PID 1588 set thread context of 2056	1588	raserver.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

raserver.exe

description ioc process

File opened for modification C:\Program Files (x86)\Bvlqxb\config4h8tvf.exe raserver.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Bvlqxb\config4h8tvf.exe	raserver.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

raserver.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-929662420-1054238289-2961194603-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	raserver.exe

Suspicious behavior: EnumeratesProcesses 58 IoCs

Processes:

43.exeraserver.exe

pid	process
4704	43.exe
4704	43.exe
4704	43.exe
4704	43.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe
1588	raserver.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2056 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

43.exeraserver.exe

pid process

4704 43.exe
4704 43.exe
4704 43.exe
1588 raserver.exe
1588 raserver.exe
1588 raserver.exe
1588 raserver.exe

pid	process
2056	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 14 IoCs

Processes:

43.exeraserver.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4704	43.exe
Token: SeDebugPrivilege	1588	raserver.exe
Token: SeShutdownPrivilege	2056	Explorer.EXE
Token: SeCreatePagefilePrivilege	2056	Explorer.EXE
Token: SeShutdownPrivilege	2056	Explorer.EXE
Token: SeCreatePagefilePrivilege	2056	Explorer.EXE
Token: SeShutdownPrivilege	2056	Explorer.EXE
Token: SeCreatePagefilePrivilege	2056	Explorer.EXE
Token: SeShutdownPrivilege	2056	Explorer.EXE
Token: SeCreatePagefilePrivilege	2056	Explorer.EXE
Token: SeShutdownPrivilege	2056	Explorer.EXE
Token: SeCreatePagefilePrivilege	2056	Explorer.EXE
Token: SeShutdownPrivilege	2056	Explorer.EXE
Token: SeCreatePagefilePrivilege	2056	Explorer.EXE

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

Explorer.EXEraserver.exe

description	pid	process	target process
PID 2056 wrote to memory of 1588	2056	Explorer.EXE	raserver.exe
PID 2056 wrote to memory of 1588	2056	Explorer.EXE	raserver.exe
PID 2056 wrote to memory of 1588	2056	Explorer.EXE	raserver.exe
PID 1588 wrote to memory of 4136	1588	raserver.exe	cmd.exe
PID 1588 wrote to memory of 4136	1588	raserver.exe	cmd.exe
PID 1588 wrote to memory of 4136	1588	raserver.exe	cmd.exe
PID 1588 wrote to memory of 2972	1588	raserver.exe	cmd.exe
PID 1588 wrote to memory of 2972	1588	raserver.exe	cmd.exe
PID 1588 wrote to memory of 2972	1588	raserver.exe	cmd.exe
PID 1588 wrote to memory of 392	1588	raserver.exe	cmd.exe
PID 1588 wrote to memory of 392	1588	raserver.exe	cmd.exe
PID 1588 wrote to memory of 392	1588	raserver.exe	cmd.exe
PID 1588 wrote to memory of 2860	1588	raserver.exe	Firefox.exe
PID 1588 wrote to memory of 2860	1588	raserver.exe	Firefox.exe
PID 1588 wrote to memory of 2860	1588	raserver.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2056

C:\Users\Admin\AppData\Local\Temp\43.exe
"C:\Users\Admin\AppData\Local\Temp\43.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4704

C:\Windows\SysWOW64\raserver.exe
"C:\Windows\SysWOW64\raserver.exe"
2⤵
- Adds 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:1588

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\43.exe"
3⤵
PID:4136

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:2972

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:392

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:2860

Network

MITRE ATT&CK Matrix ATT&CK 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

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

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/392-168-0x0000000000000000-mapping.dmp

Download
memory/1588-136-0x00000000009A0000-0x00000000009BF000-memory.dmp

Filesize
124KB

Download
memory/1588-137-0x00000000003C0000-0x00000000003ED000-memory.dmp

Filesize
180KB

Download
memory/1588-139-0x00000000024D0000-0x000000000281A000-memory.dmp

Filesize
3.3MB

Download
memory/1588-140-0x0000000002360000-0x00000000023F0000-memory.dmp

Filesize
576KB

Download
memory/1588-135-0x0000000000000000-mapping.dmp

Download
memory/1588-142-0x00000000003C0000-0x00000000003ED000-memory.dmp

Filesize
180KB

Download
memory/2056-175-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-214-0x00000000023A0000-0x00000000023B0000-memory.dmp

Filesize
64KB

Download
memory/2056-148-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-150-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-149-0x0000000002470000-0x0000000002480000-memory.dmp

Filesize
64KB

Download
memory/2056-147-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-151-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-145-0x0000000002D00000-0x0000000002DB0000-memory.dmp

Filesize
704KB

Download
memory/2056-152-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-153-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-154-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-155-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-156-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-157-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-158-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-159-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-160-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-161-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-162-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-163-0x0000000002DD0000-0x0000000002DE0000-memory.dmp

Filesize
64KB

Download
memory/2056-164-0x0000000002DD0000-0x0000000002DE0000-memory.dmp

Filesize
64KB

Download
memory/2056-165-0x0000000002DD0000-0x0000000002DE0000-memory.dmp

Filesize
64KB

Download
memory/2056-180-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-144-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-143-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-141-0x0000000002D00000-0x0000000002DB0000-memory.dmp

Filesize
704KB

Download
memory/2056-170-0x0000000002DD0000-0x0000000002DE0000-memory.dmp

Filesize
64KB

Download
memory/2056-171-0x0000000002DD0000-0x0000000002DE0000-memory.dmp

Filesize
64KB

Download
memory/2056-172-0x0000000002DD0000-0x0000000002DE0000-memory.dmp

Filesize
64KB

Download
memory/2056-173-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-174-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-134-0x0000000002970000-0x0000000002AE7000-memory.dmp

Filesize
1.5MB

Download
memory/2056-176-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-177-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-178-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-179-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-181-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-146-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-198-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-183-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-184-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-185-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-186-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-187-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-188-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-189-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-190-0x0000000002DB0000-0x0000000002DC0000-memory.dmp

Filesize
64KB

Download
memory/2056-191-0x0000000002DB0000-0x0000000002DC0000-memory.dmp

Filesize
64KB

Download
memory/2056-192-0x0000000000A90000-0x0000000000AA0000-memory.dmp

Filesize
64KB

Download
memory/2056-193-0x0000000002DB0000-0x0000000002DC0000-memory.dmp

Filesize
64KB

Download
memory/2056-194-0x0000000002DB0000-0x0000000002DC0000-memory.dmp

Filesize
64KB

Download
memory/2056-195-0x0000000000A90000-0x0000000000AA0000-memory.dmp

Filesize
64KB

Download
memory/2056-196-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-197-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-182-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-201-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-200-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-199-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-202-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-203-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-204-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-205-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-207-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-206-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-208-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-209-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-210-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-211-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-212-0x0000000002460000-0x0000000002470000-memory.dmp

Filesize
64KB

Download
memory/2056-213-0x00000000023A0000-0x00000000023B0000-memory.dmp

Filesize
64KB

Download
memory/2972-166-0x0000000000000000-mapping.dmp

Download
memory/4136-138-0x0000000000000000-mapping.dmp

Download
memory/4704-132-0x0000000000BD0000-0x0000000000F1A000-memory.dmp

Filesize
3.3MB

Download
memory/4704-133-0x0000000000B60000-0x0000000000B71000-memory.dmp

Filesize
68KB

Download