formbook | cbc74da583fc123ca5783a7c977f382af7a71a227888d95a9b8203bd0a2adf62

General

Target

PROCUREMENT_001.js
Size

396KB
MD5

ead2e4417e0ba32a086cbd96ffde7ce5
SHA1

0f47a3ec2a02054f1d54815544feaac77fb32793
SHA256

cbc74da583fc123ca5783a7c977f382af7a71a227888d95a9b8203bd0a2adf62
SHA512

e26c09f7e4318f62cc1e0f4f84e77cf28e6a3d68a0dfb20f84e8b849bc65bf06a4aca46c446c7ae7ea831b9ff047aa32fe6bb82b946e149d68bfa3df3f0efae4

Score

10^/10

formbook vjw0rm xloader r4wf loader persistence rat spyware stealer suricata trojan worm

Malware Config

Extracted

Family

xloader

Version

2.8

Campaign

r4wf

Decoy

eQLhwti8E4CX1m8bp0WK2Q==

axoAyf6nwR9Y43o1nFx+930=

vf9fMlHrgdcI

TRQU8PPgFWegAcLFsjQ5TUX2

CFXUiz7SjsLqcQ==

XKeIL6Nmg+8pokY+wjaooasXRQIt

NLSkgIdanO/4SNPAdlKUrIms7Q==

TTKhgqyuCnCmH7yGa12g8HXrnY/nKGI=

5X0d70pNfaYGRgI=

fXXOk9C1+U9bhkIBIqn8

dN7HmMiv/TtAgyP2tYrEG2Yq4Yw=

HRqUgbJeorn4Zg==

MZ7Sh6xm71vhCNLW

7iFsO188fKYGRgI=

o9VC9kgPVXmCz2gBIqn8

B0y+iMbD+lzhCNLW

ciUeBS0WbdHuVGH+xJU=

Q3334PeyxydNmzoBIqn8

kgHx3RbrgdcI

WQjgo8h9g6YGRgI=

Extracted

Family

vjw0rm

C2

http://franmhort.duia.ro:8152

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Vjw0rm
Vjw0rm is a remote access trojan written in JavaScript.
trojan worm vjw0rm
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 6 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\greatk.exe	xloader
C:\Users\Admin\AppData\Local\Temp\greatk.exe	xloader
behavioral2/memory/3888-141-0x0000000000140000-0x000000000016C000-memory.dmp	xloader
behavioral2/memory/3888-145-0x0000000000140000-0x000000000016C000-memory.dmp	xloader
C:\Program Files (x86)\Lqlp0wt20\d6xt-6ibt-.exe	xloader
C:\Program Files (x86)\Lqlp0wt20\d6xt-6ibt-.exe	xloader

Adds policy 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\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	netsh.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\JXFHB6MXCLG = "C:\\Program Files (x86)\\Lqlp0wt20\\d6xt-6ibt-.exe"	netsh.exe

Blocklisted process makes network request 2 IoCs

Processes:

wscript.exe

flow pid process

6 4916 wscript.exe
69 4916 wscript.exe
Executes dropped EXE 2 IoCs

Processes:

greatk.exed6xt-6ibt-.exe

pid process

4200 greatk.exe
856 d6xt-6ibt-.exe

flow	pid	process
6	4916	wscript.exe
69	4916	wscript.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

wscript.exegreatk.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	wscript.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Control Panel\International\Geo\Nation	greatk.exe

Drops startup file 2 IoCs

Processes:

wscript.exe

description	ioc	process
File created	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TKlRbFxljO.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\TKlRbFxljO.js	wscript.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

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

wscript.exe

description	ioc	process
Key created	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-2632097139-1792035885-811742494-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\TKlRbFxljO.js\""	wscript.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

greatk.exenetsh.exe

description	pid	process	target process
PID 4200 set thread context of 1060	4200	greatk.exe	Explorer.EXE
PID 3888 set thread context of 1060	3888	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)\Lqlp0wt20\d6xt-6ibt-.exe	netsh.exe
File opened for modification	C:\Program Files (x86)\Lqlp0wt20	Explorer.EXE
File created	C:\Program Files (x86)\Lqlp0wt20\d6xt-6ibt-.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Lqlp0wt20\d6xt-6ibt-.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

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 54 IoCs

Processes:

greatk.exenetsh.exed6xt-6ibt-.exe

pid	process
4200	greatk.exe
4200	greatk.exe
4200	greatk.exe
4200	greatk.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
856	d6xt-6ibt-.exe
856	d6xt-6ibt-.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe
3888	netsh.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1060 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

greatk.exenetsh.exe

pid process

4200 greatk.exe
4200 greatk.exe
4200 greatk.exe
3888 netsh.exe
3888 netsh.exe
3888 netsh.exe
3888 netsh.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

greatk.exenetsh.exed6xt-6ibt-.exe

description pid process

Token: SeDebugPrivilege 4200 greatk.exe
Token: SeDebugPrivilege 3888 netsh.exe
Token: SeDebugPrivilege 856 d6xt-6ibt-.exe

pid	process
1060	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	4200	greatk.exe
Token: SeDebugPrivilege	3888	netsh.exe
Token: SeDebugPrivilege	856	d6xt-6ibt-.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

wscript.exeExplorer.EXEnetsh.exe

description	pid	process	target process
PID 2892 wrote to memory of 4916	2892	wscript.exe	wscript.exe
PID 2892 wrote to memory of 4916	2892	wscript.exe	wscript.exe
PID 2892 wrote to memory of 4200	2892	wscript.exe	greatk.exe
PID 2892 wrote to memory of 4200	2892	wscript.exe	greatk.exe
PID 2892 wrote to memory of 4200	2892	wscript.exe	greatk.exe
PID 1060 wrote to memory of 3888	1060	Explorer.EXE	netsh.exe
PID 1060 wrote to memory of 3888	1060	Explorer.EXE	netsh.exe
PID 1060 wrote to memory of 3888	1060	Explorer.EXE	netsh.exe
PID 3888 wrote to memory of 2160	3888	netsh.exe	cmd.exe
PID 3888 wrote to memory of 2160	3888	netsh.exe	cmd.exe
PID 3888 wrote to memory of 2160	3888	netsh.exe	cmd.exe
PID 3888 wrote to memory of 1108	3888	netsh.exe	cmd.exe
PID 3888 wrote to memory of 1108	3888	netsh.exe	cmd.exe
PID 3888 wrote to memory of 1108	3888	netsh.exe	cmd.exe
PID 3888 wrote to memory of 3484	3888	netsh.exe	cmd.exe
PID 3888 wrote to memory of 3484	3888	netsh.exe	cmd.exe
PID 3888 wrote to memory of 3484	3888	netsh.exe	cmd.exe
PID 3888 wrote to memory of 4056	3888	netsh.exe	Firefox.exe
PID 3888 wrote to memory of 4056	3888	netsh.exe	Firefox.exe
PID 3888 wrote to memory of 4056	3888	netsh.exe	Firefox.exe
PID 1060 wrote to memory of 856	1060	Explorer.EXE	d6xt-6ibt-.exe
PID 1060 wrote to memory of 856	1060	Explorer.EXE	d6xt-6ibt-.exe
PID 1060 wrote to memory of 856	1060	Explorer.EXE	d6xt-6ibt-.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1060

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\PROCUREMENT_001.js
2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2892

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\TKlRbFxljO.js"
3⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:4916

C:\Users\Admin\AppData\Local\Temp\greatk.exe
"C:\Users\Admin\AppData\Local\Temp\greatk.exe"
3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4200

C:\Windows\SysWOW64\netsh.exe
"C:\Windows\SysWOW64\netsh.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
PID:3888

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\greatk.exe"
3⤵
PID:2160

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:1108

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:3484

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4056

C:\Program Files (x86)\Lqlp0wt20\d6xt-6ibt-.exe
"C:\Program Files (x86)\Lqlp0wt20\d6xt-6ibt-.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:856

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

2

T1060

Privilege Escalation

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:\Program Files (x86)\Lqlp0wt20\d6xt-6ibt-.exe
Filesize
174KB

MD5
4e4fe9a1e4568efac0293fcaf431f2da

SHA1
c17588029ab95904ab548b5c8fb4dc626e1d8d12

SHA256
929b0c7d953ee579a49a6d4a9456a1a45a9f4e81933adf6a07b34d6669f096b6

SHA512
7a323280ef25c208fbe726e5ba21200ec9af976f30da3ea330387afe95c41ad082404d4cd811672f0b7e9764759c8cc7b1b2252da242ff8253e429bb2cc7a461

Download Submit
C:\Program Files (x86)\Lqlp0wt20\d6xt-6ibt-.exe
Filesize
174KB

MD5
4e4fe9a1e4568efac0293fcaf431f2da

SHA1
c17588029ab95904ab548b5c8fb4dc626e1d8d12

SHA256
929b0c7d953ee579a49a6d4a9456a1a45a9f4e81933adf6a07b34d6669f096b6

SHA512
7a323280ef25c208fbe726e5ba21200ec9af976f30da3ea330387afe95c41ad082404d4cd811672f0b7e9764759c8cc7b1b2252da242ff8253e429bb2cc7a461

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\greatk.exe
Filesize
174KB

MD5
4e4fe9a1e4568efac0293fcaf431f2da

SHA1
c17588029ab95904ab548b5c8fb4dc626e1d8d12

SHA256
929b0c7d953ee579a49a6d4a9456a1a45a9f4e81933adf6a07b34d6669f096b6

SHA512
7a323280ef25c208fbe726e5ba21200ec9af976f30da3ea330387afe95c41ad082404d4cd811672f0b7e9764759c8cc7b1b2252da242ff8253e429bb2cc7a461

Download Submit
C:\Users\Admin\AppData\Local\Temp\greatk.exe
Filesize
174KB

MD5
4e4fe9a1e4568efac0293fcaf431f2da

SHA1
c17588029ab95904ab548b5c8fb4dc626e1d8d12

SHA256
929b0c7d953ee579a49a6d4a9456a1a45a9f4e81933adf6a07b34d6669f096b6

SHA512
7a323280ef25c208fbe726e5ba21200ec9af976f30da3ea330387afe95c41ad082404d4cd811672f0b7e9764759c8cc7b1b2252da242ff8253e429bb2cc7a461

Download Submit
C:\Users\Admin\AppData\Roaming\TKlRbFxljO.js
Filesize
30KB

MD5
e80c5a9f243cd8589446c7531265ad1c

SHA1
83fa6c700a036754f8f506ce7eea111cbb70fed8

SHA256
81c5757f8a810180b55725f2778493af9ca1f25a87c7f9154646ceeac628cd37

SHA512
24e26cba2e7076f2208306b93eadb61782d08029bda21433c682ba88333ab28225388a6823e7b566e5b18ce0b0a91dad20d64be59a03d5f22491a0a7496544ba

Download Submit
memory/856-154-0x0000000000D80000-0x00000000010CA000-memory.dmp

Filesize
3.3MB

Download
memory/856-151-0x0000000000000000-mapping.dmp

Download
memory/1060-137-0x0000000007C60000-0x0000000007DF3000-memory.dmp

Filesize
1.6MB

Download
memory/1060-146-0x0000000008160000-0x000000000829B000-memory.dmp

Filesize
1.2MB

Download
memory/1060-144-0x0000000008160000-0x000000000829B000-memory.dmp

Filesize
1.2MB

Download
memory/1108-147-0x0000000000000000-mapping.dmp

Download
memory/2160-139-0x0000000000000000-mapping.dmp

Download
memory/3484-149-0x0000000000000000-mapping.dmp

Download
memory/3888-142-0x0000000000D60000-0x00000000010AA000-memory.dmp

Filesize
3.3MB

Download
memory/3888-145-0x0000000000140000-0x000000000016C000-memory.dmp

Filesize
176KB

Download
memory/3888-143-0x0000000000B90000-0x0000000000C20000-memory.dmp

Filesize
576KB

Download
memory/3888-141-0x0000000000140000-0x000000000016C000-memory.dmp

Filesize
176KB

Download
memory/3888-140-0x0000000001520000-0x000000000153E000-memory.dmp

Filesize
120KB

Download
memory/3888-138-0x0000000000000000-mapping.dmp

Download
memory/4200-136-0x0000000000820000-0x0000000000831000-memory.dmp

Filesize
68KB

Download
memory/4200-135-0x0000000000E70000-0x00000000011BA000-memory.dmp

Filesize
3.3MB

Download
memory/4200-132-0x0000000000000000-mapping.dmp

Download
memory/4916-130-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads