formbook | b6ca5260fe0d12121268026560ad699cf4f0dadf38b880359a12f283df97fed9

General

Target

Purchase Order List.exe
Size

368KB
MD5

962eef4cf460292ecc166f2b2fc98823
SHA1

c666349ef2d17b180d3121954e658d4df231d9e8
SHA256

61ce52bb7cf517275e2bea379104a392630ec8dc216790a910f4586efbdca4fb
SHA512

32bc1b69343e11308da5309370e9b97969e4b47bf9c942aae97233b60e2ec6380e0c34a094c3d2260a9d48b1d4d821c8bc89071b10f54eaf27000c0625e715ab

Score

10^/10

formbook 3nop persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

3nop

Decoy

bakecakesandmore.com

shenglisuoye.com

chinapopfactory.com

ynlrhd.com

liqourforyou.com

leonqamil.com

meccafon.com

online-marketing-strategie.biz

rbfxi.com

frseyb.info

leyu91.com

hotsmail.today

beepot.tech

dunaemmetmobility.com

sixpenceworkshop.com

incrediblefavorcoaching.com

pofo.info

yanshudaili.com

yellowbrickwedding.com

paintpartyblueprint.com

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata

Formbook Payload 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/3152-138-0x0000000000400000-0x000000000042D000-memory.dmp	formbook
behavioral2/memory/4580-146-0x0000000000A40000-0x0000000000A6D000-memory.dmp	formbook

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\NBCXALTX = "C:\\Program Files (x86)\\K_vmdh\\w6a8rtk0v1dw.exe"	rundll32.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:

Purchase Order List.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-3751123196-3323558407-1869646069-1000\Control Panel\International\Geo\Nation	Purchase Order List.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:

Purchase Order List.exePurchase Order List.exerundll32.exe

description	pid	process	target process
PID 4844 set thread context of 3152	4844	Purchase Order List.exe	Purchase Order List.exe
PID 3152 set thread context of 3116	3152	Purchase Order List.exe	Explorer.EXE
PID 4580 set thread context of 3116	4580	rundll32.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

rundll32.exe

description ioc process

File opened for modification C:\Program Files (x86)\K_vmdh\w6a8rtk0v1dw.exe rundll32.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Creates scheduled task(s) 1 TTPs 1 IoCs
Schtasks is often used by malware for persistence or to perform post-infection execution.
persistence

Scheduled Task
T1053

Processes:

schtasks.exe

pid process

896 schtasks.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\K_vmdh\w6a8rtk0v1dw.exe	rundll32.exe

pid	process
896	schtasks.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-1-5-21-3751123196-3323558407-1869646069-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Suspicious behavior: EnumeratesProcesses 36 IoCs

Processes:

Purchase Order List.exePurchase Order List.exerundll32.exe

pid	process
4844	Purchase Order List.exe
4844	Purchase Order List.exe
3152	Purchase Order List.exe
3152	Purchase Order List.exe
3152	Purchase Order List.exe
3152	Purchase Order List.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3116 Explorer.EXE

pid	process
3116	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

Purchase Order List.exerundll32.exe

pid	process
3152	Purchase Order List.exe
3152	Purchase Order List.exe
3152	Purchase Order List.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe
4580	rundll32.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

Purchase Order List.exePurchase Order List.exerundll32.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	4844	Purchase Order List.exe
Token: SeDebugPrivilege	3152	Purchase Order List.exe
Token: SeDebugPrivilege	4580	rundll32.exe
Token: SeShutdownPrivilege	3116	Explorer.EXE
Token: SeCreatePagefilePrivilege	3116	Explorer.EXE
Token: SeShutdownPrivilege	3116	Explorer.EXE
Token: SeCreatePagefilePrivilege	3116	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

Purchase Order List.exeExplorer.EXErundll32.exe

description	pid	process	target process
PID 4844 wrote to memory of 896	4844	Purchase Order List.exe	schtasks.exe
PID 4844 wrote to memory of 896	4844	Purchase Order List.exe	schtasks.exe
PID 4844 wrote to memory of 896	4844	Purchase Order List.exe	schtasks.exe
PID 4844 wrote to memory of 3540	4844	Purchase Order List.exe	Purchase Order List.exe
PID 4844 wrote to memory of 3540	4844	Purchase Order List.exe	Purchase Order List.exe
PID 4844 wrote to memory of 3540	4844	Purchase Order List.exe	Purchase Order List.exe
PID 4844 wrote to memory of 3152	4844	Purchase Order List.exe	Purchase Order List.exe
PID 4844 wrote to memory of 3152	4844	Purchase Order List.exe	Purchase Order List.exe
PID 4844 wrote to memory of 3152	4844	Purchase Order List.exe	Purchase Order List.exe
PID 4844 wrote to memory of 3152	4844	Purchase Order List.exe	Purchase Order List.exe
PID 4844 wrote to memory of 3152	4844	Purchase Order List.exe	Purchase Order List.exe
PID 4844 wrote to memory of 3152	4844	Purchase Order List.exe	Purchase Order List.exe
PID 3116 wrote to memory of 4580	3116	Explorer.EXE	rundll32.exe
PID 3116 wrote to memory of 4580	3116	Explorer.EXE	rundll32.exe
PID 3116 wrote to memory of 4580	3116	Explorer.EXE	rundll32.exe
PID 4580 wrote to memory of 2416	4580	rundll32.exe	cmd.exe
PID 4580 wrote to memory of 2416	4580	rundll32.exe	cmd.exe
PID 4580 wrote to memory of 2416	4580	rundll32.exe	cmd.exe
PID 4580 wrote to memory of 344	4580	rundll32.exe	cmd.exe
PID 4580 wrote to memory of 344	4580	rundll32.exe	cmd.exe
PID 4580 wrote to memory of 344	4580	rundll32.exe	cmd.exe
PID 4580 wrote to memory of 3844	4580	rundll32.exe	Firefox.exe
PID 4580 wrote to memory of 3844	4580	rundll32.exe	Firefox.exe
PID 4580 wrote to memory of 3844	4580	rundll32.exe	Firefox.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⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3116

C:\Users\Admin\AppData\Local\Temp\Purchase Order List.exe
"C:\Users\Admin\AppData\Local\Temp\Purchase Order List.exe"
2⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4844

C:\Windows\SysWOW64\schtasks.exe
"C:\Windows\System32\schtasks.exe" /Create /TN "Updates\SZyEeet" /XML "C:\Users\Admin\AppData\Local\Temp\tmp1EE2.tmp"
3⤵
- Creates scheduled task(s)
PID:896

C:\Users\Admin\AppData\Local\Temp\Purchase Order List.exe
"{path}"
3⤵
PID:3540

C:\Users\Admin\AppData\Local\Temp\Purchase Order List.exe
"{path}"
3⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3152

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:4580

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\Purchase Order List.exe"
3⤵
PID:2416

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:344

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:3844

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Scheduled Task

1

T1053

Persistence

Registry Run Keys / Startup Folder

1

T1060

Scheduled Task

1

T1053

Privilege Escalation

Scheduled Task

1

T1053

Defense Evasion

Modify Registry

3

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

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
C:\Users\Admin\AppData\Local\Temp\tmp1EE2.tmp
Filesize
1KB

MD5
ab7219aae0b2c0f09d3f980f1d4bf2bc

SHA1
ca9e10c3fa8be121baca609c1417b47764aa1633

SHA256
dd5ef3f602bdd9ec253781e7aa9aec7fbe5fb5db5613a2e3392aba96d4c65319

SHA512
3553c5aee7c1ae5c9981f64f114e1efdc126c2b2e3a378f9242cb52c484e7da18279b1336a350f21718eea369499e3a59da7bec93ab208f3f8d6b228484d5a69

Download Submit
C:\Users\Admin\AppData\Roaming\-65A6372\-65logim.jpeg
Filesize
75KB

MD5
6fbefac455bc6edc0eaf8d9a8307ce7a

SHA1
3dad3b70caf7a5640fa70cbad644407a68b77589

SHA256
1fd0ee07200c67fb96763aff18999d936b28341d7abeadef78817360bb2fec9a

SHA512
d0ba13579029c329a5dcc3ea4a77b3a00d91ad2de61f69664f2c5925b124616c6b9fe454fbc9fb22e735198d80a9d9ac0e3c66da13c59da81bcf3ab1ba3d5e17

Download Submit
C:\Users\Admin\AppData\Roaming\-65A6372\-65logrf.ini
Filesize
40B

MD5
2f245469795b865bdd1b956c23d7893d

SHA1
6ad80b974d3808f5a20ea1e766c7d2f88b9e5895

SHA256
1662d01a2d47b875a34fc7a8cd92e78cb2ba7f34023c7fd2639cbb10b8d94361

SHA512
909f189846a5d2db208a5eb2e7cb3042c0f164caf437e2b1b6de608c0a70e4f3510b81b85753dbeec1e211e6a83e6ea8c96aff896e9b6e8ed42014473a54dc4f

Download Submit
C:\Users\Admin\AppData\Roaming\-65A6372\-65logrg.ini
Filesize
38B

MD5
4aadf49fed30e4c9b3fe4a3dd6445ebe

SHA1
1e332822167c6f351b99615eada2c30a538ff037

SHA256
75034beb7bded9aeab5748f4592b9e1419256caec474065d43e531ec5cc21c56

SHA512
eb5b3908d5e7b43ba02165e092f05578f45f15a148b4c3769036aa542c23a0f7cd2bc2770cf4119a7e437de3f681d9e398511f69f66824c516d9b451bb95f945

Download Submit
C:\Users\Admin\AppData\Roaming\-65A6372\-65logri.ini
Filesize
40B

MD5
d63a82e5d81e02e399090af26db0b9cb

SHA1
91d0014c8f54743bba141fd60c9d963f869d76c9

SHA256
eaece2eba6310253249603033c744dd5914089b0bb26bde6685ec9813611baae

SHA512
38afb05016d8f3c69d246321573997aaac8a51c34e61749a02bf5e8b2b56b94d9544d65801511044e1495906a86dc2100f2e20ff4fcbed09e01904cc780fdbad

Download Submit
C:\Users\Admin\AppData\Roaming\-65A6372\-65logrv.ini
Filesize
872B

MD5
bbc41c78bae6c71e63cb544a6a284d94

SHA1
33f2c1d9fa0e9c99b80bc2500621e95af38b1f9a

SHA256
ee83c6bcea9353c74bfc0a7e739f3c4a765ace894470e09cdcdebba700b8d4cb

SHA512
0aea424b57adae3e14ad6491cab585f554b4dffe601b5a17bad6ee6177d2f0f995e419cde576e2d1782b9bddc0661aada11a2c9f1454ae625d9e3223635ec9f4

Download Submit
memory/344-150-0x0000000000000000-mapping.dmp

Download
memory/896-134-0x0000000000000000-mapping.dmp

Download
memory/2416-144-0x0000000000000000-mapping.dmp

Download
memory/3116-142-0x00000000028C0000-0x0000000002A60000-memory.dmp

Filesize
1.6MB

Download
memory/3116-149-0x0000000008210000-0x0000000008349000-memory.dmp

Filesize
1.2MB

Download
memory/3152-140-0x00000000015B0000-0x00000000018FA000-memory.dmp

Filesize
3.3MB

Download
memory/3152-141-0x00000000010E0000-0x00000000010F4000-memory.dmp

Filesize
80KB

Download
memory/3152-138-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/3152-137-0x0000000000000000-mapping.dmp

Download
memory/3540-136-0x0000000000000000-mapping.dmp

Download
memory/4580-148-0x0000000002790000-0x0000000002823000-memory.dmp

Filesize
588KB

Download
memory/4580-147-0x0000000002A50000-0x0000000002D9A000-memory.dmp

Filesize
3.3MB

Download
memory/4580-146-0x0000000000A40000-0x0000000000A6D000-memory.dmp

Filesize
180KB

Download
memory/4580-145-0x0000000000EE0000-0x0000000000EF4000-memory.dmp

Filesize
80KB

Download
memory/4580-143-0x0000000000000000-mapping.dmp

Download
memory/4844-130-0x0000000000EC0000-0x0000000000F22000-memory.dmp

Filesize
392KB

Download
memory/4844-133-0x0000000006740000-0x00000000067DC000-memory.dmp

Filesize
624KB

Download
memory/4844-132-0x0000000005940000-0x00000000059D2000-memory.dmp

Filesize
584KB

Download
memory/4844-131-0x0000000005E50000-0x00000000063F4000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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