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
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\bin.exe	xloader
C:\Users\Admin\AppData\Local\Temp\bin.exe	xloader
behavioral2/memory/5008-142-0x0000000000920000-0x000000000094C000-memory.dmp	xloader
behavioral2/memory/5008-145-0x0000000000920000-0x000000000094C000-memory.dmp	xloader
C:\Program Files (x86)\Dmdfpl2\gdibz7.exe	xloader
C:\Program Files (x86)\Dmdfpl2\gdibz7.exe	xloader

Blocklisted process makes network request 16 IoCs

Processes:

wscript.exe

flow	pid	process
6	2212	wscript.exe
14	2212	wscript.exe
20	2212	wscript.exe
24	2212	wscript.exe
34	2212	wscript.exe
38	2212	wscript.exe
43	2212	wscript.exe
50	2212	wscript.exe
56	2212	wscript.exe
58	2212	wscript.exe
63	2212	wscript.exe
66	2212	wscript.exe
71	2212	wscript.exe
79	2212	wscript.exe
82	2212	wscript.exe
86	2212	wscript.exe

Executes dropped EXE 2 IoCs

Processes:

bin.exegdibz7.exe

pid process

1312 bin.exe
4708 gdibz7.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:

bin.exewscript.exe

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

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 4 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

colorcpl.exewscript.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\KNFX-6OXCJ = "C:\\Program Files (x86)\\Dmdfpl2\\gdibz7.exe"	colorcpl.exe
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\\rGfQQqljGk.js\""	wscript.exe
Key created	\Registry\Machine\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run	colorcpl.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

bin.execolorcpl.exe

description	pid	process	target process
PID 1312 set thread context of 2148	1312	bin.exe	Explorer.EXE
PID 1312 set thread context of 2148	1312	bin.exe	Explorer.EXE
PID 5008 set thread context of 2148	5008	colorcpl.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

colorcpl.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Dmdfpl2\gdibz7.exe	colorcpl.exe
File opened for modification	C:\Program Files (x86)\Dmdfpl2	Explorer.EXE
File created	C:\Program Files (x86)\Dmdfpl2\gdibz7.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Dmdfpl2\gdibz7.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:

colorcpl.exe

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

Suspicious behavior: EnumeratesProcesses 58 IoCs

Processes:

bin.execolorcpl.exegdibz7.exe

pid	process
1312	bin.exe
1312	bin.exe
1312	bin.exe
1312	bin.exe
1312	bin.exe
1312	bin.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
4708	gdibz7.exe
4708	gdibz7.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe
5008	colorcpl.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

2148 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

bin.execolorcpl.exe

pid process

1312 bin.exe
1312 bin.exe
1312 bin.exe
1312 bin.exe
5008 colorcpl.exe
5008 colorcpl.exe
5008 colorcpl.exe
5008 colorcpl.exe
Suspicious use of AdjustPrivilegeToken 3 IoCs

Processes:

bin.execolorcpl.exegdibz7.exe

description pid process

Token: SeDebugPrivilege 1312 bin.exe
Token: SeDebugPrivilege 5008 colorcpl.exe
Token: SeDebugPrivilege 4708 gdibz7.exe

pid	process
2148	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	1312	bin.exe
Token: SeDebugPrivilege	5008	colorcpl.exe
Token: SeDebugPrivilege	4708	gdibz7.exe

Suspicious use of WriteProcessMemory 23 IoCs

Processes:

wscript.exeExplorer.EXEcolorcpl.exe

description	pid	process	target process
PID 936 wrote to memory of 2212	936	wscript.exe	wscript.exe
PID 936 wrote to memory of 2212	936	wscript.exe	wscript.exe
PID 936 wrote to memory of 1312	936	wscript.exe	bin.exe
PID 936 wrote to memory of 1312	936	wscript.exe	bin.exe
PID 936 wrote to memory of 1312	936	wscript.exe	bin.exe
PID 2148 wrote to memory of 5008	2148	Explorer.EXE	colorcpl.exe
PID 2148 wrote to memory of 5008	2148	Explorer.EXE	colorcpl.exe
PID 2148 wrote to memory of 5008	2148	Explorer.EXE	colorcpl.exe
PID 5008 wrote to memory of 3664	5008	colorcpl.exe	cmd.exe
PID 5008 wrote to memory of 3664	5008	colorcpl.exe	cmd.exe
PID 5008 wrote to memory of 3664	5008	colorcpl.exe	cmd.exe
PID 5008 wrote to memory of 4600	5008	colorcpl.exe	cmd.exe
PID 5008 wrote to memory of 4600	5008	colorcpl.exe	cmd.exe
PID 5008 wrote to memory of 4600	5008	colorcpl.exe	cmd.exe
PID 5008 wrote to memory of 1648	5008	colorcpl.exe	cmd.exe
PID 5008 wrote to memory of 1648	5008	colorcpl.exe	cmd.exe
PID 5008 wrote to memory of 1648	5008	colorcpl.exe	cmd.exe
PID 5008 wrote to memory of 4104	5008	colorcpl.exe	Firefox.exe
PID 5008 wrote to memory of 4104	5008	colorcpl.exe	Firefox.exe
PID 5008 wrote to memory of 4104	5008	colorcpl.exe	Firefox.exe
PID 2148 wrote to memory of 4708	2148	Explorer.EXE	gdibz7.exe
PID 2148 wrote to memory of 4708	2148	Explorer.EXE	gdibz7.exe
PID 2148 wrote to memory of 4708	2148	Explorer.EXE	gdibz7.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:2148

C:\Windows\system32\wscript.exe
wscript.exe C:\Users\Admin\AppData\Local\Temp\PO_20230025-3668.js
2⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:936

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:2212

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:1312

C:\Windows\SysWOW64\colorcpl.exe
"C:\Windows\SysWOW64\colorcpl.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:5008

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\bin.exe"
3⤵
PID:3664

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:4600

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:1648

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4104

C:\Program Files (x86)\Dmdfpl2\gdibz7.exe
"C:\Program Files (x86)\Dmdfpl2\gdibz7.exe"
2⤵
- Executes dropped EXE
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:4708

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

2

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)\Dmdfpl2\gdibz7.exe
Filesize
174KB

MD5
3ae87cd93196b3f86a2e1cfa3e6c9133

SHA1
64b444869181c8893d695072239bc48681ea10cd

SHA256
0a1b761095e129d76033c7bde535ca8f0517b4ddaaeda3981b5d8f998f8cf407

SHA512
1e1490502069ff5328939cc30a8e1aa74089e9cf918a27c0ce831c877035fe578811fcb970859c88437724c65383e86f055eedad4c14e3699d4270d280b865e8

Download Submit
C:\Program Files (x86)\Dmdfpl2\gdibz7.exe
Filesize
174KB

MD5
3ae87cd93196b3f86a2e1cfa3e6c9133

SHA1
64b444869181c8893d695072239bc48681ea10cd

SHA256
0a1b761095e129d76033c7bde535ca8f0517b4ddaaeda3981b5d8f998f8cf407

SHA512
1e1490502069ff5328939cc30a8e1aa74089e9cf918a27c0ce831c877035fe578811fcb970859c88437724c65383e86f055eedad4c14e3699d4270d280b865e8

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\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/1312-132-0x0000000000000000-mapping.dmp

Download
memory/1312-135-0x0000000000E90000-0x00000000011DA000-memory.dmp

Filesize
3.3MB

Download
memory/1312-136-0x00000000007F0000-0x0000000000801000-memory.dmp

Filesize
68KB

Download
memory/1312-138-0x00000000009B0000-0x00000000009C1000-memory.dmp

Filesize
68KB

Download
memory/1648-151-0x0000000000000000-mapping.dmp

Download
memory/2148-148-0x0000000008690000-0x00000000087C1000-memory.dmp

Filesize
1.2MB

Download
memory/2148-139-0x0000000002E00000-0x0000000002EC5000-memory.dmp

Filesize
788KB

Download
memory/2148-147-0x0000000008690000-0x00000000087C1000-memory.dmp

Filesize
1.2MB

Download
memory/2148-137-0x0000000002930000-0x0000000002A72000-memory.dmp

Filesize
1.3MB

Download
memory/2212-130-0x0000000000000000-mapping.dmp

Download
memory/3664-143-0x0000000000000000-mapping.dmp

Download
memory/4600-149-0x0000000000000000-mapping.dmp

Download
memory/4708-156-0x0000000001510000-0x000000000185A000-memory.dmp

Filesize
3.3MB

Download
memory/4708-153-0x0000000000000000-mapping.dmp

Download
memory/5008-146-0x0000000002970000-0x0000000002A00000-memory.dmp

Filesize
576KB

Download
memory/5008-140-0x0000000000000000-mapping.dmp

Download
memory/5008-142-0x0000000000920000-0x000000000094C000-memory.dmp

Filesize
176KB

Download
memory/5008-141-0x0000000000CD0000-0x0000000000CE9000-memory.dmp

Filesize
100KB

Download
memory/5008-145-0x0000000000920000-0x000000000094C000-memory.dmp

Filesize
176KB

Download
memory/5008-144-0x0000000002C40000-0x0000000002F8A000-memory.dmp

Filesize
3.3MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads