formbook | 6959e78db6f5ebf3c0c86c05868e281a3013cdfcc3a57440ec8a24ab43506af8

General

Target

SecuriteInfo.com.W32.AIDetectNet.01.19438.exe
Size

393KB
MD5

5b696400216967545b512c498c1e5086
SHA1

f968a02346a39e5484ea9280382c9c0d7d77f13f
SHA256

6959e78db6f5ebf3c0c86c05868e281a3013cdfcc3a57440ec8a24ab43506af8
SHA512

061c66a085991cd935cea68460556d7431c611de648413dffd49a420bc5fef06cd5b2a28dcafc041f5c63857b1a422ef5206f38900439234c84c7789a993357b

Score

10^/10

formbook xloader tn61 loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

tn61

Decoy

ryliehorrall.art

mesdco.net

street-art-ink.com

sepetcin.com

stilghar.com

hawaiipooltiles.com

fuerst-von-falkennest.com

totalvirtue.com

xdk0blc0tqy6a7.life

zootowngravel.com

kreditkarten-optionde.com

6888tlbb.xyz

albertakleekai.com

travelnurseinfofinder3.life

valleyinnswat.com

secure-remove-devices.com

digitalswamy.com

www112casinova.com

medifasttrd.com

distritoxermar.com

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

Xloader Payload 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4688-132-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral2/memory/4688-138-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral2/memory/2028-141-0x0000000000680000-0x00000000006AB000-memory.dmp	xloader
behavioral2/memory/2028-145-0x0000000000680000-0x00000000006AB000-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:

rundll32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	rundll32.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\ZR_0R4BPVV = "C:\\Program Files (x86)\\Uefr\\pxkhpo2d0b6.exe"	rundll32.exe

Executes dropped EXE 1 IoCs

Processes:

pxkhpo2d0b6.exe

pid process

3264 pxkhpo2d0b6.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
3264	pxkhpo2d0b6.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

SecuriteInfo.com.W32.AIDetectNet.01.19438.execvtres.exerundll32.exe

description	pid	process	target process
PID 4408 set thread context of 4688	4408	SecuriteInfo.com.W32.AIDetectNet.01.19438.exe	cvtres.exe
PID 4688 set thread context of 2600	4688	cvtres.exe	Explorer.EXE
PID 2028 set thread context of 2600	2028	rundll32.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

rundll32.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Uefr\pxkhpo2d0b6.exe	rundll32.exe
File opened for modification	C:\Program Files (x86)\Uefr	Explorer.EXE
File created	C:\Program Files (x86)\Uefr\pxkhpo2d0b6.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Uefr\pxkhpo2d0b6.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

rundll32.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Suspicious behavior: EnumeratesProcesses 48 IoCs

Processes:

cvtres.exerundll32.exe

pid	process
4688	cvtres.exe
4688	cvtres.exe
4688	cvtres.exe
4688	cvtres.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe
2028	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2600 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

cvtres.exerundll32.exe

pid process

4688 cvtres.exe
4688 cvtres.exe
4688 cvtres.exe
2028 rundll32.exe
2028 rundll32.exe
2028 rundll32.exe
2028 rundll32.exe

pid	process
2600	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 11 IoCs

Processes:

SecuriteInfo.com.W32.AIDetectNet.01.19438.execvtres.exerundll32.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4408	SecuriteInfo.com.W32.AIDetectNet.01.19438.exe
Token: SeDebugPrivilege	4688	cvtres.exe
Token: SeDebugPrivilege	2028	rundll32.exe
Token: SeShutdownPrivilege	2600	Explorer.EXE
Token: SeCreatePagefilePrivilege	2600	Explorer.EXE
Token: SeShutdownPrivilege	2600	Explorer.EXE
Token: SeCreatePagefilePrivilege	2600	Explorer.EXE
Token: SeShutdownPrivilege	2600	Explorer.EXE
Token: SeCreatePagefilePrivilege	2600	Explorer.EXE
Token: SeShutdownPrivilege	2600	Explorer.EXE
Token: SeCreatePagefilePrivilege	2600	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

SecuriteInfo.com.W32.AIDetectNet.01.19438.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 4408 wrote to memory of 4688	4408	SecuriteInfo.com.W32.AIDetectNet.01.19438.exe	cvtres.exe
PID 4408 wrote to memory of 4688	4408	SecuriteInfo.com.W32.AIDetectNet.01.19438.exe	cvtres.exe
PID 4408 wrote to memory of 4688	4408	SecuriteInfo.com.W32.AIDetectNet.01.19438.exe	cvtres.exe
PID 4408 wrote to memory of 4688	4408	SecuriteInfo.com.W32.AIDetectNet.01.19438.exe	cvtres.exe
PID 4408 wrote to memory of 4688	4408	SecuriteInfo.com.W32.AIDetectNet.01.19438.exe	cvtres.exe
PID 4408 wrote to memory of 4688	4408	SecuriteInfo.com.W32.AIDetectNet.01.19438.exe	cvtres.exe
PID 2600 wrote to memory of 2028	2600	Explorer.EXE	rundll32.exe
PID 2600 wrote to memory of 2028	2600	Explorer.EXE	rundll32.exe
PID 2600 wrote to memory of 2028	2600	Explorer.EXE	rundll32.exe
PID 2028 wrote to memory of 4848	2028	rundll32.exe	cmd.exe
PID 2028 wrote to memory of 4848	2028	rundll32.exe	cmd.exe
PID 2028 wrote to memory of 4848	2028	rundll32.exe	cmd.exe
PID 2028 wrote to memory of 916	2028	rundll32.exe	cmd.exe
PID 2028 wrote to memory of 916	2028	rundll32.exe	cmd.exe
PID 2028 wrote to memory of 916	2028	rundll32.exe	cmd.exe
PID 2028 wrote to memory of 1716	2028	rundll32.exe	cmd.exe
PID 2028 wrote to memory of 1716	2028	rundll32.exe	cmd.exe
PID 2028 wrote to memory of 1716	2028	rundll32.exe	cmd.exe
PID 2028 wrote to memory of 3420	2028	rundll32.exe	Firefox.exe
PID 2028 wrote to memory of 3420	2028	rundll32.exe	Firefox.exe
PID 2028 wrote to memory of 3420	2028	rundll32.exe	Firefox.exe
PID 2600 wrote to memory of 3264	2600	Explorer.EXE	pxkhpo2d0b6.exe
PID 2600 wrote to memory of 3264	2600	Explorer.EXE	pxkhpo2d0b6.exe
PID 2600 wrote to memory of 3264	2600	Explorer.EXE	pxkhpo2d0b6.exe

System policy modification 1 TTPs 1 IoCs
evasion

Modify Registry
T1112

Processes:

rundll32.exe

description ioc process

Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer rundll32.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer	rundll32.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2600

C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.19438.exe
"C:\Users\Admin\AppData\Local\Temp\SecuriteInfo.com.W32.AIDetectNet.01.19438.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4408

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:4688

C:\Windows\SysWOW64\autofmt.exe
"C:\Windows\SysWOW64\autofmt.exe"
2⤵
PID:4840

C:\Windows\SysWOW64\autofmt.exe
"C:\Windows\SysWOW64\autofmt.exe"
2⤵
PID:4828

C:\Windows\SysWOW64\rundll32.exe
"C:\Windows\SysWOW64\rundll32.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:2028

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Windows\Microsoft.NET\Framework\v4.0.30319\cvtres.exe"
3⤵
PID:4848

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:916

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:1716

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:3420

C:\Program Files (x86)\Uefr\pxkhpo2d0b6.exe
"C:\Program Files (x86)\Uefr\pxkhpo2d0b6.exe"
2⤵
- Executes dropped EXE
PID:3264

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

Replay Monitor

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Downloads

C:\Program Files (x86)\Uefr\pxkhpo2d0b6.exe
Filesize
45KB

MD5
70d838a7dc5b359c3f938a71fad77db0

SHA1
66b83eb16481c334719eed406bc58a3c2b910923

SHA256
e4dbdbf7888ea96f3f8aa5c4c7f2bcf6e57d724dd8194fe5f35b673c6ef724ea

SHA512
9c9a945db5b5e7ff8105bfe74578e6f00b5f707f7c3d8f1f1fb41553a6d0eab29cef026e77877a1ad6435fa7bc369141921442e1485f2b0894c6bbcbd7791034

Download Submit
C:\Program Files (x86)\Uefr\pxkhpo2d0b6.exe
Filesize
45KB

MD5
70d838a7dc5b359c3f938a71fad77db0

SHA1
66b83eb16481c334719eed406bc58a3c2b910923

SHA256
e4dbdbf7888ea96f3f8aa5c4c7f2bcf6e57d724dd8194fe5f35b673c6ef724ea

SHA512
9c9a945db5b5e7ff8105bfe74578e6f00b5f707f7c3d8f1f1fb41553a6d0eab29cef026e77877a1ad6435fa7bc369141921442e1485f2b0894c6bbcbd7791034

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/916-147-0x0000000000000000-mapping.dmp

Download
memory/1716-149-0x0000000000000000-mapping.dmp

Download
memory/2028-143-0x0000000002370000-0x0000000002400000-memory.dmp

Filesize
576KB

Download
memory/2028-137-0x0000000000000000-mapping.dmp

Download
memory/2028-145-0x0000000000680000-0x00000000006AB000-memory.dmp

Filesize
172KB

Download
memory/2028-141-0x0000000000680000-0x00000000006AB000-memory.dmp

Filesize
172KB

Download
memory/2028-140-0x0000000000730000-0x0000000000744000-memory.dmp

Filesize
80KB

Download
memory/2028-142-0x00000000025D0000-0x000000000291A000-memory.dmp

Filesize
3.3MB

Download
memory/2600-136-0x0000000002C90000-0x0000000002D68000-memory.dmp

Filesize
864KB

Download
memory/2600-144-0x00000000084B0000-0x00000000085B3000-memory.dmp

Filesize
1.0MB

Download
memory/2600-146-0x00000000084B0000-0x00000000085B3000-memory.dmp

Filesize
1.0MB

Download
memory/3264-151-0x0000000000000000-mapping.dmp

Download
memory/4408-130-0x0000000000830000-0x0000000000898000-memory.dmp

Filesize
416KB

Download
memory/4688-138-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/4688-135-0x0000000000C60000-0x0000000000C71000-memory.dmp

Filesize
68KB

Download
memory/4688-134-0x00000000012D0000-0x000000000161A000-memory.dmp

Filesize
3.3MB

Download
memory/4688-132-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/4688-131-0x0000000000000000-mapping.dmp

Download
memory/4848-139-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads