formbook | 1647bc6d0a8d2b78d577c1243d0b4b92e10ff8694c302dc35e6743760ea59579

General

Target

PO_20230025-3668.js
Size

323KB
MD5

db8dbe0b33d17df3e15778abc850128a
SHA1

30f6c70af79e7ab4ab07c92ce3220215e13ba99f
SHA256

1647bc6d0a8d2b78d577c1243d0b4b92e10ff8694c302dc35e6743760ea59579
SHA512

8e927d4142e20e0419a49b5e3dacdb6beba966c9d71b2283b0d62c191de2038d481a83af79de65225cdf4062bd10c67b790ad6c3cc54bd4af213b5507b28c0de

Score

10^/10

formbook vjw0rm xloader vs8g loader persistence rat spyware stealer suricata trojan worm

Malware Config

Extracted

Family

xloader

Version

2.9

Campaign

vs8g

Decoy

xEVEsySadSMf8UUC

H8ZbYtGKWPCfp91+uS3TFo/F7tYacwDqHw==

L/St5UjIhTMzEHsb

8h8tDvq0nl8JCWoagxa0MVyvnA==

7bml44z9jZsZx8Co2T8=

EwH88ZtcOu8ehs2P2o6wv78FEe4+xRQ=

bTn3LpE1HfpPAXI=

nYxT+9GLhS1d3zzGJuTDlgpT

HxonIwh8TesenMCo2T8=

Ki83MiehhC9e1i7YQ/Wd32JsGcun

wHcUByFRMuEGh8Co2T8=

86tqpg/Jy60eFmMRPefDlgpT

grSUYa5yahUf8UUC

HVviVsk7Cb6Elc571pnSWCJ93G17PkiI

6LJ1qBPUtGNIl8Co2T8=

AYuWD33xt44VxsCo2T8=

/smXvLMh868VzQqs99/DlgpT

1kEMNVtaMw6KmN+YANYm+kA=

daarti3nbFVKnsCo2T8=

0EJM6cFFHvawA2U=

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

Xloader Payload 6 IoCs

rat

Processes:

resource	yara_rule
C:\Users\Admin\AppData\Local\Temp\bin.exe	xloader
C:\Users\Admin\AppData\Local\Temp\bin.exe	xloader
behavioral1/memory/1184-68-0x00000000000C0000-0x00000000000EC000-memory.dmp	xloader
behavioral1/memory/1184-72-0x00000000000C0000-0x00000000000EC000-memory.dmp	xloader
C:\Program Files (x86)\Mc8tpkzi\configgn8xv4.exe	xloader
C:\Program Files (x86)\Mc8tpkzi\configgn8xv4.exe	xloader

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

colorcpl.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	colorcpl.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\9R0DOPOHN = "C:\\Program Files (x86)\\Mc8tpkzi\\configgn8xv4.exe"	colorcpl.exe

Blocklisted process makes network request 16 IoCs

Processes:

wscript.exe

flow	pid	process
4	900	wscript.exe
5	900	wscript.exe
8	900	wscript.exe
14	900	wscript.exe
18	900	wscript.exe
23	900	wscript.exe
25	900	wscript.exe
27	900	wscript.exe
29	900	wscript.exe
33	900	wscript.exe
37	900	wscript.exe
41	900	wscript.exe
46	900	wscript.exe
53	900	wscript.exe
57	900	wscript.exe
61	900	wscript.exe

Executes dropped EXE 2 IoCs

Processes:

bin.execonfiggn8xv4.exe

pid process

1860 bin.exe
624 configgn8xv4.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:

bin.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation bin.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Control Panel\International\Geo\Nation	bin.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\rGfQQqljGk.js	wscript.exe
File opened for modification	C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup\rGfQQqljGk.js	wscript.exe

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-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run	wscript.exe
Set value (str)	\REGISTRY\USER\S-1-5-21-1083475884-596052423-1669053738-1000\Software\Microsoft\Windows\CurrentVersion\Run\YVBPFHTJIQ = "\"C:\\Users\\Admin\\AppData\\Roaming\\rGfQQqljGk.js\""	wscript.exe

Suspicious use of SetThreadContext 2 IoCs

Processes:

bin.execolorcpl.exe

description	pid	process	target process
PID 1860 set thread context of 1268	1860	bin.exe	Explorer.EXE
PID 1184 set thread context of 1268	1184	colorcpl.exe	Explorer.EXE

Drops file in Program Files directory 2 IoCs

Processes:

Explorer.EXEcolorcpl.exe

description	ioc	process
File created	C:\Program Files (x86)\Mc8tpkzi\configgn8xv4.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Mc8tpkzi\configgn8xv4.exe	colorcpl.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:

colorcpl.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-1083475884-596052423-1669053738-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	colorcpl.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

Processes:

bin.execolorcpl.execonfiggn8xv4.exe

pid	process
1860	bin.exe
1860	bin.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
1184	colorcpl.exe
624	configgn8xv4.exe
1184	colorcpl.exe
1184	colorcpl.exe

Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

bin.execolorcpl.exe

pid process

1860 bin.exe
1860 bin.exe
1860 bin.exe
1184 colorcpl.exe
1184 colorcpl.exe
1184 colorcpl.exe
1184 colorcpl.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

bin.execolorcpl.execonfiggn8xv4.exe

description pid process

Token: SeDebugPrivilege 1860 bin.exe
Token: SeDebugPrivilege 1184 colorcpl.exe
Token: SeDebugPrivilege 624 configgn8xv4.exe
Suspicious use of FindShellTrayWindow 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE
Suspicious use of SendNotifyMessage 2 IoCs

Processes:

Explorer.EXE

pid process

1268 Explorer.EXE
1268 Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1860	bin.exe
Token: SeDebugPrivilege	1184	colorcpl.exe
Token: SeDebugPrivilege	624	configgn8xv4.exe

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

pid	process
1268	Explorer.EXE
1268	Explorer.EXE

Suspicious use of WriteProcessMemory 24 IoCs

Processes:

wscript.exeExplorer.EXEcolorcpl.exe

description	pid	process	target process
PID 1460 wrote to memory of 900	1460	wscript.exe	wscript.exe
PID 1460 wrote to memory of 900	1460	wscript.exe	wscript.exe
PID 1460 wrote to memory of 900	1460	wscript.exe	wscript.exe
PID 1460 wrote to memory of 1860	1460	wscript.exe	bin.exe
PID 1460 wrote to memory of 1860	1460	wscript.exe	bin.exe
PID 1460 wrote to memory of 1860	1460	wscript.exe	bin.exe
PID 1460 wrote to memory of 1860	1460	wscript.exe	bin.exe
PID 1268 wrote to memory of 1184	1268	Explorer.EXE	colorcpl.exe
PID 1268 wrote to memory of 1184	1268	Explorer.EXE	colorcpl.exe
PID 1268 wrote to memory of 1184	1268	Explorer.EXE	colorcpl.exe
PID 1268 wrote to memory of 1184	1268	Explorer.EXE	colorcpl.exe
PID 1184 wrote to memory of 1828	1184	colorcpl.exe	cmd.exe
PID 1184 wrote to memory of 1828	1184	colorcpl.exe	cmd.exe
PID 1184 wrote to memory of 1828	1184	colorcpl.exe	cmd.exe
PID 1184 wrote to memory of 1828	1184	colorcpl.exe	cmd.exe
PID 1184 wrote to memory of 960	1184	colorcpl.exe	Firefox.exe
PID 1184 wrote to memory of 960	1184	colorcpl.exe	Firefox.exe
PID 1184 wrote to memory of 960	1184	colorcpl.exe	Firefox.exe
PID 1184 wrote to memory of 960	1184	colorcpl.exe	Firefox.exe
PID 1184 wrote to memory of 960	1184	colorcpl.exe	Firefox.exe
PID 1268 wrote to memory of 624	1268	Explorer.EXE	configgn8xv4.exe
PID 1268 wrote to memory of 624	1268	Explorer.EXE	configgn8xv4.exe
PID 1268 wrote to memory of 624	1268	Explorer.EXE	configgn8xv4.exe
PID 1268 wrote to memory of 624	1268	Explorer.EXE	configgn8xv4.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1268

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\PO_20230025-3668.js
2⤵
- Suspicious use of WriteProcessMemory
PID:1460

C:\Windows\System32\wscript.exe
"C:\Windows\System32\wscript.exe" //B "C:\Users\Admin\AppData\Roaming\rGfQQqljGk.js"
3⤵
- Blocklisted process makes network request
- Drops startup file
- Adds Run key to start application
PID:900

C:\Users\Admin\AppData\Local\Temp\bin.exe
"C:\Users\Admin\AppData\Local\Temp\bin.exe"
3⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:1860

C:\Windows\SysWOW64\colorcpl.exe
"C:\Windows\SysWOW64\colorcpl.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:1184

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\bin.exe"
3⤵
PID:1828

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:960

C:\Program Files (x86)\Mc8tpkzi\configgn8xv4.exe
"C:\Program Files (x86)\Mc8tpkzi\configgn8xv4.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:624

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

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Program Files (x86)\Mc8tpkzi\configgn8xv4.exe
Filesize
174KB

MD5
3ae87cd93196b3f86a2e1cfa3e6c9133

SHA1
64b444869181c8893d695072239bc48681ea10cd

SHA256
0a1b761095e129d76033c7bde535ca8f0517b4ddaaeda3981b5d8f998f8cf407

SHA512
1e1490502069ff5328939cc30a8e1aa74089e9cf918a27c0ce831c877035fe578811fcb970859c88437724c65383e86f055eedad4c14e3699d4270d280b865e8

Download Submit
C:\Program Files (x86)\Mc8tpkzi\configgn8xv4.exe
Filesize
174KB

MD5
3ae87cd93196b3f86a2e1cfa3e6c9133

SHA1
64b444869181c8893d695072239bc48681ea10cd

SHA256
0a1b761095e129d76033c7bde535ca8f0517b4ddaaeda3981b5d8f998f8cf407

SHA512
1e1490502069ff5328939cc30a8e1aa74089e9cf918a27c0ce831c877035fe578811fcb970859c88437724c65383e86f055eedad4c14e3699d4270d280b865e8

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

MD5
3ae87cd93196b3f86a2e1cfa3e6c9133

SHA1
64b444869181c8893d695072239bc48681ea10cd

SHA256
0a1b761095e129d76033c7bde535ca8f0517b4ddaaeda3981b5d8f998f8cf407

SHA512
1e1490502069ff5328939cc30a8e1aa74089e9cf918a27c0ce831c877035fe578811fcb970859c88437724c65383e86f055eedad4c14e3699d4270d280b865e8

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

MD5
3ae87cd93196b3f86a2e1cfa3e6c9133

SHA1
64b444869181c8893d695072239bc48681ea10cd

SHA256
0a1b761095e129d76033c7bde535ca8f0517b4ddaaeda3981b5d8f998f8cf407

SHA512
1e1490502069ff5328939cc30a8e1aa74089e9cf918a27c0ce831c877035fe578811fcb970859c88437724c65383e86f055eedad4c14e3699d4270d280b865e8

Download Submit
C:\Users\Admin\AppData\Roaming\rGfQQqljGk.js
Filesize
5KB

MD5
0f389cc287a61d5748ce3636002e5491

SHA1
d22a5d7e3913e0c6e516d3125cfad2c310945406

SHA256
04d6fb897af27bc05167016117e70a6a20f32bb19a0c1e38429ec43e2c2511ae

SHA512
9b2b7a2f1f3b7333c1ff46107c8a99e8e6b1fee69041cc462218c9c2dd93427675d69645b2c10164e4d4a9b73d7e3af1e42627cd371e293643c76264bef59e23

Download Submit
memory/624-76-0x00000000006B0000-0x00000000009B3000-memory.dmp

Filesize
3.0MB

Download
memory/624-74-0x0000000000000000-mapping.dmp

Download
memory/900-55-0x0000000000000000-mapping.dmp

Download
memory/1184-70-0x0000000000850000-0x00000000008E0000-memory.dmp

Filesize
576KB

Download
memory/1184-63-0x0000000000000000-mapping.dmp

Download
memory/1184-64-0x00000000769D1000-0x00000000769D3000-memory.dmp

Filesize
8KB

Download
memory/1184-72-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download
memory/1184-67-0x0000000000900000-0x0000000000918000-memory.dmp

Filesize
96KB

Download
memory/1184-69-0x0000000001FF0000-0x00000000022F3000-memory.dmp

Filesize
3.0MB

Download
memory/1184-68-0x00000000000C0000-0x00000000000EC000-memory.dmp

Filesize
176KB

Download
memory/1268-71-0x0000000006410000-0x00000000064FE000-memory.dmp

Filesize
952KB

Download
memory/1268-73-0x0000000006410000-0x00000000064FE000-memory.dmp

Filesize
952KB

Download
memory/1268-62-0x0000000005FD0000-0x0000000006137000-memory.dmp

Filesize
1.4MB

Download
memory/1460-54-0x000007FEFC331000-0x000007FEFC333000-memory.dmp

Filesize
8KB

Download
memory/1828-66-0x0000000000000000-mapping.dmp

Download
memory/1860-61-0x0000000000170000-0x0000000000181000-memory.dmp

Filesize
68KB

Download
memory/1860-60-0x0000000000860000-0x0000000000B63000-memory.dmp

Filesize
3.0MB

Download
memory/1860-56-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads