formbook | a7c1f4ae5c35b88e68b4d82db4c7e14d53922946d853569b5efd5050e7480229

Analysis

max time kernel
151s
max time network
155s
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

40.exe
Size

180KB
MD5

12d0de0d9ba0e753b17a5572a3a23822
SHA1

19ea0cdd98fbe21fd9b7a6c1a1a681d882c9e973
SHA256

b38ccebbce70c75c88be4529e17377d914fcc21b63f9afec651299e68b3346a4
SHA512

9f3c978c6793af877209b225bed86745160923f1db142015a0eb542207de43353998e50311914e7e46a29698dd779a2ed855e2d8fa34501bc570fc44144dd856
SSDEEP

3072:2TFKD7rLrumkW7yyuMaEaGLoXgeg0KaMQC+t8j9o8mcW7sFBV:gKPrOmYyud/GLoXgj0KajC+Yo8mcCO3

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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral8/memory/3864-137-0x0000000000660000-0x000000000068D000-memory.dmp	xloader
behavioral8/memory/3864-141-0x0000000000660000-0x000000000068D000-memory.dmp	xloader
C:\Program Files (x86)\Ycnj8\user1b6.exe	xloader
C:\Program Files (x86)\Ycnj8\user1b6.exe	xloader

Executes dropped EXE 1 IoCs

Processes:

user1b6.exe

pid process

1464 user1b6.exe
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:

40.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation 40.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
1464	user1b6.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-929662420-1054238289-2961194603-1000\Control Panel\International\Geo\Nation	40.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

ipconfig.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	ipconfig.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\J2CHHJ8HFT = "C:\\Program Files (x86)\\Ycnj8\\user1b6.exe"	ipconfig.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

40.exeipconfig.exe

description	pid	process	target process
PID 3036 set thread context of 2724	3036	40.exe	Explorer.EXE
PID 3864 set thread context of 2724	3864	ipconfig.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

Explorer.EXEipconfig.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Ycnj8\user1b6.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Ycnj8\user1b6.exe	ipconfig.exe
File opened for modification	C:\Program Files (x86)\Ycnj8	Explorer.EXE
File created	C:\Program Files (x86)\Ycnj8\user1b6.exe	Explorer.EXE

Gathers network information 2 TTPs 1 IoCs
Uses commandline utility to view network configuration.

System Information Discovery
T1082

Command-Line Interface
T1059

Processes:

ipconfig.exe

pid process

3864 ipconfig.exe

pid	process
3864	ipconfig.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

ipconfig.exe

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

Suspicious behavior: EnumeratesProcesses 60 IoCs

Processes:

40.exeipconfig.exeuser1b6.exe

pid	process
3036	40.exe
3036	40.exe
3036	40.exe
3036	40.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
1464	user1b6.exe
1464	user1b6.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe
3864	ipconfig.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2724 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

40.exeipconfig.exe

pid process

3036 40.exe
3036 40.exe
3036 40.exe
3864 ipconfig.exe
3864 ipconfig.exe
3864 ipconfig.exe
3864 ipconfig.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

40.exeipconfig.exeuser1b6.exe

description pid process

Token: SeDebugPrivilege 3036 40.exe
Token: SeDebugPrivilege 3864 ipconfig.exe
Token: SeDebugPrivilege 1464 user1b6.exe

pid	process
2724	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	3036	40.exe
Token: SeDebugPrivilege	3864	ipconfig.exe
Token: SeDebugPrivilege	1464	user1b6.exe

Suspicious use of WriteProcessMemory 18 IoCs

Processes:

Explorer.EXEipconfig.exe

description	pid	process	target process
PID 2724 wrote to memory of 3864	2724	Explorer.EXE	ipconfig.exe
PID 2724 wrote to memory of 3864	2724	Explorer.EXE	ipconfig.exe
PID 2724 wrote to memory of 3864	2724	Explorer.EXE	ipconfig.exe
PID 3864 wrote to memory of 1916	3864	ipconfig.exe	cmd.exe
PID 3864 wrote to memory of 1916	3864	ipconfig.exe	cmd.exe
PID 3864 wrote to memory of 1916	3864	ipconfig.exe	cmd.exe
PID 3864 wrote to memory of 1796	3864	ipconfig.exe	cmd.exe
PID 3864 wrote to memory of 1796	3864	ipconfig.exe	cmd.exe
PID 3864 wrote to memory of 1796	3864	ipconfig.exe	cmd.exe
PID 3864 wrote to memory of 5012	3864	ipconfig.exe	cmd.exe
PID 3864 wrote to memory of 5012	3864	ipconfig.exe	cmd.exe
PID 3864 wrote to memory of 5012	3864	ipconfig.exe	cmd.exe
PID 3864 wrote to memory of 4936	3864	ipconfig.exe	Firefox.exe
PID 3864 wrote to memory of 4936	3864	ipconfig.exe	Firefox.exe
PID 3864 wrote to memory of 4936	3864	ipconfig.exe	Firefox.exe
PID 2724 wrote to memory of 1464	2724	Explorer.EXE	user1b6.exe
PID 2724 wrote to memory of 1464	2724	Explorer.EXE	user1b6.exe
PID 2724 wrote to memory of 1464	2724	Explorer.EXE	user1b6.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2724

C:\Users\Admin\AppData\Local\Temp\40.exe
"C:\Users\Admin\AppData\Local\Temp\40.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3036

C:\Windows\SysWOW64\ipconfig.exe
"C:\Windows\SysWOW64\ipconfig.exe"
2⤵
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Gathers network information
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3864

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\40.exe"
3⤵
PID:1916

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:1796

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:5012

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4936

C:\Program Files (x86)\Ycnj8\user1b6.exe
"C:\Program Files (x86)\Ycnj8\user1b6.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:1464

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Command-Line Interface

T1059

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

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Downloads

C:\Program Files (x86)\Ycnj8\user1b6.exe
Filesize
180KB

MD5
12d0de0d9ba0e753b17a5572a3a23822

SHA1
19ea0cdd98fbe21fd9b7a6c1a1a681d882c9e973

SHA256
b38ccebbce70c75c88be4529e17377d914fcc21b63f9afec651299e68b3346a4

SHA512
9f3c978c6793af877209b225bed86745160923f1db142015a0eb542207de43353998e50311914e7e46a29698dd779a2ed855e2d8fa34501bc570fc44144dd856

Download Submit
C:\Program Files (x86)\Ycnj8\user1b6.exe
Filesize
180KB

MD5
12d0de0d9ba0e753b17a5572a3a23822

SHA1
19ea0cdd98fbe21fd9b7a6c1a1a681d882c9e973

SHA256
b38ccebbce70c75c88be4529e17377d914fcc21b63f9afec651299e68b3346a4

SHA512
9f3c978c6793af877209b225bed86745160923f1db142015a0eb542207de43353998e50311914e7e46a29698dd779a2ed855e2d8fa34501bc570fc44144dd856

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/1464-151-0x0000000001740000-0x0000000001A8A000-memory.dmp

Filesize
3.3MB

Download
memory/1464-148-0x0000000000000000-mapping.dmp

Download
memory/1796-144-0x0000000000000000-mapping.dmp

Download
memory/1916-138-0x0000000000000000-mapping.dmp

Download
memory/2724-142-0x00000000028A0000-0x0000000002998000-memory.dmp

Filesize
992KB

Download
memory/2724-143-0x00000000028A0000-0x0000000002998000-memory.dmp

Filesize
992KB

Download
memory/2724-134-0x0000000002D00000-0x0000000002E2C000-memory.dmp

Filesize
1.2MB

Download
memory/3036-132-0x0000000001080000-0x00000000013CA000-memory.dmp

Filesize
3.3MB

Download
memory/3036-133-0x0000000000FD0000-0x0000000000FE1000-memory.dmp

Filesize
68KB

Download
memory/3864-141-0x0000000000660000-0x000000000068D000-memory.dmp

Filesize
180KB

Download
memory/3864-140-0x0000000000C50000-0x0000000000CE0000-memory.dmp

Filesize
576KB

Download
memory/3864-139-0x0000000000E20000-0x000000000116A000-memory.dmp

Filesize
3.3MB

Download
memory/3864-137-0x0000000000660000-0x000000000068D000-memory.dmp

Filesize
180KB

Download
memory/3864-136-0x0000000000370000-0x000000000037B000-memory.dmp

Filesize
44KB

Download
memory/3864-135-0x0000000000000000-mapping.dmp

Download
memory/5012-146-0x0000000000000000-mapping.dmp

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