formbook | ca4112bb9a7b776f14e9085c5b3ecaa7458ecaaa4c2515b79978d7f99eca768f

Analysis

max time kernel
152s
max time network
156s
platform
windows10-2004_x64
resource
win10v2004-20220414-en
submitted
12-05-2022 07:32

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General

Target

148b63c2b85f806c7c3036f854b1c6f0.exe
Size

253KB
MD5

148b63c2b85f806c7c3036f854b1c6f0
SHA1

43b8071712dc21a04140a2eae003380b7575f7e8
SHA256

ca4112bb9a7b776f14e9085c5b3ecaa7458ecaaa4c2515b79978d7f99eca768f
SHA512

b16af075fc1a9569d6898d58f623a8af277b09543130afaf9e21a710032d1545c42b37530514cb0d080ed3afcc028317573ae5cdd7c2fac5bbb87e0ac80f99d2

Score

10^/10

formbook xloader arh2 loader persistence rat spyware stealer suricata trojan

Malware Config

Extracted

Family

xloader

Version

2.6

Campaign

arh2

Decoy

hstorc.com

blackountry.com

dhrbakery.com

dezhouofit.com

defipayout.xyz

ginas4t.com

byzbh63.xyz

qrcrashview.com

mialibaby.com

enhaut.net

samainnova.com

yashveerresort.com

delfos.online

dungcumay.com

lj-counseling.net

fliptheswitch.pro

padogbitelawyer.com

aticarev.com

sederino.site

bestplansforpets-japan3.life

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 2 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/1040-136-0x0000000000400000-0x000000000042B000-memory.dmp	xloader
behavioral2/memory/1328-145-0x0000000000BC0000-0x0000000000BEB000-memory.dmp	xloader

Executes dropped EXE 3 IoCs

Processes:

lbaooyiqoz.exelbaooyiqoz.exe3fxqvuhzff.exe

pid process

3960 lbaooyiqoz.exe
1040 lbaooyiqoz.exe
1304 3fxqvuhzff.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
3960	lbaooyiqoz.exe
1040	lbaooyiqoz.exe
1304	3fxqvuhzff.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

netsh.exe

description	ioc	process
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	netsh.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\TLM0NRU88B = "C:\\Program Files (x86)\\Onf_t\\3fxqvuhzff.exe"	netsh.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

lbaooyiqoz.exelbaooyiqoz.exenetsh.exe

description	pid	process	target process
PID 3960 set thread context of 1040	3960	lbaooyiqoz.exe	lbaooyiqoz.exe
PID 1040 set thread context of 2604	1040	lbaooyiqoz.exe	Explorer.EXE
PID 1328 set thread context of 2604	1328	netsh.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

netsh.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Onf_t\3fxqvuhzff.exe	netsh.exe
File opened for modification	C:\Program Files (x86)\Onf_t	Explorer.EXE
File created	C:\Program Files (x86)\Onf_t\3fxqvuhzff.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Onf_t\3fxqvuhzff.exe	Explorer.EXE

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

3816 1304 WerFault.exe 3fxqvuhzff.exe

pid	pid_target	process	target process
3816	1304	WerFault.exe	3fxqvuhzff.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

netsh.exe

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

Suspicious behavior: EnumeratesProcesses 56 IoCs

Processes:

lbaooyiqoz.exenetsh.exe

pid	process
1040	lbaooyiqoz.exe
1040	lbaooyiqoz.exe
1040	lbaooyiqoz.exe
1040	lbaooyiqoz.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe
1328	netsh.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2604 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

lbaooyiqoz.exenetsh.exe

pid process

1040 lbaooyiqoz.exe
1040 lbaooyiqoz.exe
1040 lbaooyiqoz.exe
1328 netsh.exe
1328 netsh.exe
1328 netsh.exe
1328 netsh.exe

pid	process
2604	Explorer.EXE

Suspicious use of AdjustPrivilegeToken 4 IoCs

Processes:

lbaooyiqoz.exenetsh.exeExplorer.EXE

description	pid	process
Token: SeDebugPrivilege	1040	lbaooyiqoz.exe
Token: SeDebugPrivilege	1328	netsh.exe
Token: SeShutdownPrivilege	2604	Explorer.EXE
Token: SeCreatePagefilePrivilege	2604	Explorer.EXE

Suspicious use of WriteProcessMemory 27 IoCs

Processes:

148b63c2b85f806c7c3036f854b1c6f0.exelbaooyiqoz.exeExplorer.EXEnetsh.exe

description	pid	process	target process
PID 2292 wrote to memory of 3960	2292	148b63c2b85f806c7c3036f854b1c6f0.exe	lbaooyiqoz.exe
PID 2292 wrote to memory of 3960	2292	148b63c2b85f806c7c3036f854b1c6f0.exe	lbaooyiqoz.exe
PID 2292 wrote to memory of 3960	2292	148b63c2b85f806c7c3036f854b1c6f0.exe	lbaooyiqoz.exe
PID 3960 wrote to memory of 1040	3960	lbaooyiqoz.exe	lbaooyiqoz.exe
PID 3960 wrote to memory of 1040	3960	lbaooyiqoz.exe	lbaooyiqoz.exe
PID 3960 wrote to memory of 1040	3960	lbaooyiqoz.exe	lbaooyiqoz.exe
PID 3960 wrote to memory of 1040	3960	lbaooyiqoz.exe	lbaooyiqoz.exe
PID 3960 wrote to memory of 1040	3960	lbaooyiqoz.exe	lbaooyiqoz.exe
PID 3960 wrote to memory of 1040	3960	lbaooyiqoz.exe	lbaooyiqoz.exe
PID 2604 wrote to memory of 1328	2604	Explorer.EXE	netsh.exe
PID 2604 wrote to memory of 1328	2604	Explorer.EXE	netsh.exe
PID 2604 wrote to memory of 1328	2604	Explorer.EXE	netsh.exe
PID 1328 wrote to memory of 2944	1328	netsh.exe	cmd.exe
PID 1328 wrote to memory of 2944	1328	netsh.exe	cmd.exe
PID 1328 wrote to memory of 2944	1328	netsh.exe	cmd.exe
PID 1328 wrote to memory of 2556	1328	netsh.exe	cmd.exe
PID 1328 wrote to memory of 2556	1328	netsh.exe	cmd.exe
PID 1328 wrote to memory of 2556	1328	netsh.exe	cmd.exe
PID 1328 wrote to memory of 2788	1328	netsh.exe	cmd.exe
PID 1328 wrote to memory of 2788	1328	netsh.exe	cmd.exe
PID 1328 wrote to memory of 2788	1328	netsh.exe	cmd.exe
PID 1328 wrote to memory of 4088	1328	netsh.exe	Firefox.exe
PID 1328 wrote to memory of 4088	1328	netsh.exe	Firefox.exe
PID 1328 wrote to memory of 4088	1328	netsh.exe	Firefox.exe
PID 2604 wrote to memory of 1304	2604	Explorer.EXE	3fxqvuhzff.exe
PID 2604 wrote to memory of 1304	2604	Explorer.EXE	3fxqvuhzff.exe
PID 2604 wrote to memory of 1304	2604	Explorer.EXE	3fxqvuhzff.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:2604

C:\Users\Admin\AppData\Local\Temp\148b63c2b85f806c7c3036f854b1c6f0.exe
"C:\Users\Admin\AppData\Local\Temp\148b63c2b85f806c7c3036f854b1c6f0.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:2292

C:\Users\Admin\AppData\Local\Temp\lbaooyiqoz.exe
C:\Users\Admin\AppData\Local\Temp\lbaooyiqoz.exe C:\Users\Admin\AppData\Local\Temp\enevfyfwb
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3960

C:\Users\Admin\AppData\Local\Temp\lbaooyiqoz.exe
C:\Users\Admin\AppData\Local\Temp\lbaooyiqoz.exe C:\Users\Admin\AppData\Local\Temp\enevfyfwb
4⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1040

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\SysWOW64\netsh.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:1328

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\lbaooyiqoz.exe"
3⤵
PID:2944

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:2556

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:2788

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4088

C:\Program Files (x86)\Onf_t\3fxqvuhzff.exe
"C:\Program Files (x86)\Onf_t\3fxqvuhzff.exe"
2⤵
- Executes dropped EXE
PID:1304

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1304 -s 472
3⤵
- Program crash
PID:3816

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 404 -p 1304 -ip 1304
1⤵
PID:2028

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

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)\Onf_t\3fxqvuhzff.exe
Filesize
74KB

MD5
b0981fa438a30d097b95a96d1d7ec4b9

SHA1
e75ad5039db2bd35d56019da92cd8c71f95dbc4c

SHA256
f77848ff5808ce9a5a0d7732cbc15882c7453e4bd1c927bb62bdae198b4b7697

SHA512
be0257e995faa14ce18d9107078b4b6127ad5ce7c3fbbdda5aa1904d7f7eb41167398d36b124dc7296afc2d71df64e6e04a39b66fd7436b1b26a163773381eea

Download Submit
C:\Program Files (x86)\Onf_t\3fxqvuhzff.exe
Filesize
74KB

MD5
b0981fa438a30d097b95a96d1d7ec4b9

SHA1
e75ad5039db2bd35d56019da92cd8c71f95dbc4c

SHA256
f77848ff5808ce9a5a0d7732cbc15882c7453e4bd1c927bb62bdae198b4b7697

SHA512
be0257e995faa14ce18d9107078b4b6127ad5ce7c3fbbdda5aa1904d7f7eb41167398d36b124dc7296afc2d71df64e6e04a39b66fd7436b1b26a163773381eea

Download Submit
C:\Users\Admin\AppData\Local\Temp\2zz4hssyl78
Filesize
171KB

MD5
6629f2fca8fbc541cd84585ba0322e0a

SHA1
ee152ebf1a896a3e36423c10f2e82144e8d2637c

SHA256
cb50a336c419ed641855193c3c0467f29c60db1281dba1902b1fe4e23f67a57f

SHA512
25eb74a5362c67377a8030b4cc8c74f6c63151cb53fab167ff1387824c8bc4bcfe6d95d89cfd75344b2b1a0cd17fd4f28f54d83078fb8cc2e90e75703043359b

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
C:\Users\Admin\AppData\Local\Temp\enevfyfwb
Filesize
5KB

MD5
89a491b662b90b975d9e4a21c82922f7

SHA1
76feb91a683e49167ee4733a3c33036d488d13a1

SHA256
5341ab5d2d79a3589bad2eab39513a9445935a628f74acf2b0a92e0eb3c9f439

SHA512
41831f6d6b1c1c4f7aecf4a1f8c482e91992ffe3872c4e7e5e3cd5f8cde758fb54319935377af1d3239efa6c49afa3876e8421f3dbcd4e91fea3fec3e4a28638

Download Submit
C:\Users\Admin\AppData\Local\Temp\lbaooyiqoz.exe
Filesize
74KB

MD5
b0981fa438a30d097b95a96d1d7ec4b9

SHA1
e75ad5039db2bd35d56019da92cd8c71f95dbc4c

SHA256
f77848ff5808ce9a5a0d7732cbc15882c7453e4bd1c927bb62bdae198b4b7697

SHA512
be0257e995faa14ce18d9107078b4b6127ad5ce7c3fbbdda5aa1904d7f7eb41167398d36b124dc7296afc2d71df64e6e04a39b66fd7436b1b26a163773381eea

Download Submit
C:\Users\Admin\AppData\Local\Temp\lbaooyiqoz.exe
Filesize
74KB

MD5
b0981fa438a30d097b95a96d1d7ec4b9

SHA1
e75ad5039db2bd35d56019da92cd8c71f95dbc4c

SHA256
f77848ff5808ce9a5a0d7732cbc15882c7453e4bd1c927bb62bdae198b4b7697

SHA512
be0257e995faa14ce18d9107078b4b6127ad5ce7c3fbbdda5aa1904d7f7eb41167398d36b124dc7296afc2d71df64e6e04a39b66fd7436b1b26a163773381eea

Download Submit
C:\Users\Admin\AppData\Local\Temp\lbaooyiqoz.exe
Filesize
74KB

MD5
b0981fa438a30d097b95a96d1d7ec4b9

SHA1
e75ad5039db2bd35d56019da92cd8c71f95dbc4c

SHA256
f77848ff5808ce9a5a0d7732cbc15882c7453e4bd1c927bb62bdae198b4b7697

SHA512
be0257e995faa14ce18d9107078b4b6127ad5ce7c3fbbdda5aa1904d7f7eb41167398d36b124dc7296afc2d71df64e6e04a39b66fd7436b1b26a163773381eea

Download Submit
memory/1040-135-0x0000000000000000-mapping.dmp

Download
memory/1040-136-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1040-139-0x0000000000AF0000-0x0000000000E3A000-memory.dmp

Filesize
3.3MB

Download
memory/1040-140-0x00000000009D0000-0x00000000009E1000-memory.dmp

Filesize
68KB

Download
memory/1304-153-0x0000000000000000-mapping.dmp

Download
memory/1328-142-0x0000000000000000-mapping.dmp

Download
memory/1328-146-0x00000000015E0000-0x000000000192A000-memory.dmp

Filesize
3.3MB

Download
memory/1328-147-0x0000000001280000-0x0000000001310000-memory.dmp

Filesize
576KB

Download
memory/1328-144-0x00000000015C0000-0x00000000015DE000-memory.dmp

Filesize
120KB

Download
memory/1328-145-0x0000000000BC0000-0x0000000000BEB000-memory.dmp

Filesize
172KB

Download
memory/2556-149-0x0000000000000000-mapping.dmp

Download
memory/2604-148-0x0000000002EF0000-0x0000000003030000-memory.dmp

Filesize
1.2MB

Download
memory/2604-141-0x0000000002D60000-0x0000000002EF0000-memory.dmp

Filesize
1.6MB

Download
memory/2788-151-0x0000000000000000-mapping.dmp

Download
memory/2944-143-0x0000000000000000-mapping.dmp

Download
memory/3960-130-0x0000000000000000-mapping.dmp

Download