formbook | 175cb0ef969196bf7f303ea574bf8bfec879e6fbdf29cdb62cf325c1788e8866

General

Target

tmp.exe
Size

249KB
MD5

43d4d189e3a454af9ec3a8eb52950229
SHA1

0318519523ceb8e1336519f864fbaa4836c7bb0b
SHA256

175cb0ef969196bf7f303ea574bf8bfec879e6fbdf29cdb62cf325c1788e8866
SHA512

efd2542533a9351fbde8c662437a9cb9e6fa42dbc96442e3d498056a470e6f40797f30d44a3f08b363839cb623a8d32d7294ab80bb16619179281a04d4da4e64
SSDEEP

6144:/Ya60JwnxUpL0uzKDDT8ivn9q4p2lEtW0hlYScRcG:/YqYOpL0Oq4ivnE4s+96ScRcG

Score

10^/10

formbook xloader u8ow loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

u8ow

Decoy

uzhDDUNgg10rOh8rkUMGYiLuNnRWl9gwMQ==

bfkA4IUaSgYi7IA=

ezX5yHeR21O3h2RCgQ==

x3E4ntHeLMGQm0kdTi6PJtjOVS6Em8UaKA==

xJuAYwcZLAfqrVazWjvkirgFxDSf

qrGugLdannLYegX5dCtFMA==

i61nMddueAYi7IA=

RoNMKNhtdDWpeiYoaB37TPiHTLo=

RFj3UHHrDtAktSZhYku36opnsaMbNA==

lx0g+6RPl4jwwNPRPuTD

MyEQ4oGk6vXrMM4V

0IVWH0rfKe1J4nn6J9XB

SYVlN3Zrnq2OaWpDiQ==

fNa0jy3P8KQK25rpmwqd0t8=

UZuSZpW+9ffX9KXzmgqd0t8=

Vxf85YCWvYNZjkcDdCtFMA==

0gG1EzLP7/DrMM4V

WExRGVAEE6YS5tJkTxMhR636+A==

6Tv7U4QdURt1KUI+gw==

ooR7RXgsXPtaEutnaQ3efjIXmfJePavzIA==

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

Xloader payload 3 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4604-139-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4580-146-0x0000000000D30000-0x0000000000D5C000-memory.dmp	xloader
behavioral2/memory/4580-150-0x0000000000D30000-0x0000000000D5C000-memory.dmp	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\MHKD_RQ83DHL = "C:\\Program Files (x86)\\Tvjx\\-zcdufjzm4an.exe"	netsh.exe

Executes dropped EXE 2 IoCs

Processes:

jxpnas.exejxpnas.exe

pid process

4440 jxpnas.exe
4604 jxpnas.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:

jxpnas.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation jxpnas.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
4440	jxpnas.exe
4604	jxpnas.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-4246620582-653642754-1174164128-1000\Control Panel\International\Geo\Nation	jxpnas.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

jxpnas.exejxpnas.exenetsh.exe

description	pid	process	target process
PID 4440 set thread context of 4604	4440	jxpnas.exe	jxpnas.exe
PID 4604 set thread context of 1108	4604	jxpnas.exe	Explorer.EXE
PID 4580 set thread context of 1108	4580	netsh.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

netsh.exe

description ioc process

File opened for modification C:\Program Files (x86)\Tvjx\-zcdufjzm4an.exe netsh.exe
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082

description	ioc	process
File opened for modification	C:\Program Files (x86)\Tvjx\-zcdufjzm4an.exe	netsh.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-1-5-21-4246620582-653642754-1174164128-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	netsh.exe

Suspicious behavior: EnumeratesProcesses 58 IoCs

Processes:

jxpnas.exenetsh.exe

pid	process
4604	jxpnas.exe
4604	jxpnas.exe
4604	jxpnas.exe
4604	jxpnas.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

1108 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

jxpnas.exejxpnas.exenetsh.exe

pid process

4440 jxpnas.exe
4604 jxpnas.exe
4604 jxpnas.exe
4604 jxpnas.exe
4580 netsh.exe
4580 netsh.exe
4580 netsh.exe
4580 netsh.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

jxpnas.exenetsh.exe

description pid process

Token: SeDebugPrivilege 4604 jxpnas.exe
Token: SeDebugPrivilege 4580 netsh.exe

pid	process
1108	Explorer.EXE

pid	process
4440	jxpnas.exe
4604	jxpnas.exe
4604	jxpnas.exe
4604	jxpnas.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe
4580	netsh.exe

description	pid	process
Token: SeDebugPrivilege	4604	jxpnas.exe
Token: SeDebugPrivilege	4580	netsh.exe

Suspicious use of WriteProcessMemory 22 IoCs

Processes:

tmp.exejxpnas.exeExplorer.EXEnetsh.exe

description	pid	process	target process
PID 4880 wrote to memory of 4440	4880	tmp.exe	jxpnas.exe
PID 4880 wrote to memory of 4440	4880	tmp.exe	jxpnas.exe
PID 4880 wrote to memory of 4440	4880	tmp.exe	jxpnas.exe
PID 4440 wrote to memory of 4604	4440	jxpnas.exe	jxpnas.exe
PID 4440 wrote to memory of 4604	4440	jxpnas.exe	jxpnas.exe
PID 4440 wrote to memory of 4604	4440	jxpnas.exe	jxpnas.exe
PID 4440 wrote to memory of 4604	4440	jxpnas.exe	jxpnas.exe
PID 1108 wrote to memory of 4580	1108	Explorer.EXE	netsh.exe
PID 1108 wrote to memory of 4580	1108	Explorer.EXE	netsh.exe
PID 1108 wrote to memory of 4580	1108	Explorer.EXE	netsh.exe
PID 4580 wrote to memory of 4412	4580	netsh.exe	cmd.exe
PID 4580 wrote to memory of 4412	4580	netsh.exe	cmd.exe
PID 4580 wrote to memory of 4412	4580	netsh.exe	cmd.exe
PID 4580 wrote to memory of 3696	4580	netsh.exe	cmd.exe
PID 4580 wrote to memory of 3696	4580	netsh.exe	cmd.exe
PID 4580 wrote to memory of 3696	4580	netsh.exe	cmd.exe
PID 4580 wrote to memory of 5080	4580	netsh.exe	cmd.exe
PID 4580 wrote to memory of 5080	4580	netsh.exe	cmd.exe
PID 4580 wrote to memory of 5080	4580	netsh.exe	cmd.exe
PID 4580 wrote to memory of 4088	4580	netsh.exe	Firefox.exe
PID 4580 wrote to memory of 4088	4580	netsh.exe	Firefox.exe
PID 4580 wrote to memory of 4088	4580	netsh.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:1108

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:4880

C:\Users\Admin\AppData\Local\Temp\jxpnas.exe
"C:\Users\Admin\AppData\Local\Temp\jxpnas.exe" C:\Users\Admin\AppData\Local\Temp\ahvzwi.cq
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4440

C:\Users\Admin\AppData\Local\Temp\jxpnas.exe
"C:\Users\Admin\AppData\Local\Temp\jxpnas.exe"
4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4604

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:4580

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\jxpnas.exe"
3⤵
PID:4412

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:3696

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:5080

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

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:\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\ahvzwi.cq
Filesize
5KB

MD5
5990edca1e90a413ff69195bdbdc3be6

SHA1
5837a9f20a79279395859e1f2e30658c864ed069

SHA256
019d7db60fcdfcf3dd5ea153ebffaa61040d3193dcb2ad758532eda81258b211

SHA512
16a4accda7b7f566fe034e5b32984398e7c4ed65e78c9bf2bcb32a99afee9e70f371271317afb46450293bef3e59673df7c0ee7971ef867723c2c46618bd1564

Download Submit
C:\Users\Admin\AppData\Local\Temp\jxpnas.exe
Filesize
50KB

MD5
fc110da3fe9e6fe3f5ff60f7259d2d7e

SHA1
ba8684a068fe6fb10d231ad01b68f498fb074131

SHA256
02c0321429610986ad8850ffc7ec526bd9c2a344e52f52d7345da5fa0e545e84

SHA512
32511fa75ed00fc24a00289036efc479269b1a2fca3d7192bfc4d9db2f8662a50b12c84fb3febd42a01851486fc55d838298bf64c9e2b6d8ad0830fdf9ce1993

Download Submit
C:\Users\Admin\AppData\Local\Temp\jxpnas.exe
Filesize
50KB

MD5
fc110da3fe9e6fe3f5ff60f7259d2d7e

SHA1
ba8684a068fe6fb10d231ad01b68f498fb074131

SHA256
02c0321429610986ad8850ffc7ec526bd9c2a344e52f52d7345da5fa0e545e84

SHA512
32511fa75ed00fc24a00289036efc479269b1a2fca3d7192bfc4d9db2f8662a50b12c84fb3febd42a01851486fc55d838298bf64c9e2b6d8ad0830fdf9ce1993

Download Submit
C:\Users\Admin\AppData\Local\Temp\jxpnas.exe
Filesize
50KB

MD5
fc110da3fe9e6fe3f5ff60f7259d2d7e

SHA1
ba8684a068fe6fb10d231ad01b68f498fb074131

SHA256
02c0321429610986ad8850ffc7ec526bd9c2a344e52f52d7345da5fa0e545e84

SHA512
32511fa75ed00fc24a00289036efc479269b1a2fca3d7192bfc4d9db2f8662a50b12c84fb3febd42a01851486fc55d838298bf64c9e2b6d8ad0830fdf9ce1993

Download Submit
C:\Users\Admin\AppData\Local\Temp\ywhrwirdt.xk
Filesize
196KB

MD5
c8bba834e9fe47e57f8f77549419ee0e

SHA1
407486ea0d13a952df8c7c7bc4126d0b2299b503

SHA256
f83109aadf0a18f3a06866956cb870285b92db2c06432afaa629450ddc0c88eb

SHA512
6a8e81d1b1dc83eedbc7ef48825e9c105b850bb6f4bb404fb01d27dcfb54d31dfb629ab017fd5499883a526ded38e73d4dddd7755ace204eed8999370ab04689

Download Submit
memory/1108-149-0x0000000007030000-0x000000000718B000-memory.dmp

Filesize
1.4MB

Download
memory/1108-151-0x0000000007030000-0x000000000718B000-memory.dmp

Filesize
1.4MB

Download
memory/1108-142-0x0000000002A70000-0x0000000002BA1000-memory.dmp

Filesize
1.2MB

Download
memory/3696-152-0x0000000000000000-mapping.dmp

Download
memory/4412-144-0x0000000000000000-mapping.dmp

Download
memory/4440-132-0x0000000000000000-mapping.dmp

Download
memory/4580-146-0x0000000000D30000-0x0000000000D5C000-memory.dmp

Filesize
176KB

Download
memory/4580-147-0x00000000016E0000-0x0000000001A2A000-memory.dmp

Filesize
3.3MB

Download
memory/4580-145-0x0000000000F80000-0x0000000000F9E000-memory.dmp

Filesize
120KB

Download
memory/4580-148-0x0000000001480000-0x0000000001510000-memory.dmp

Filesize
576KB

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

Download
memory/4580-150-0x0000000000D30000-0x0000000000D5C000-memory.dmp

Filesize
176KB

Download
memory/4604-141-0x00000000009E0000-0x00000000009F1000-memory.dmp

Filesize
68KB

Download
memory/4604-140-0x0000000000AD0000-0x0000000000E1A000-memory.dmp

Filesize
3.3MB

Download
memory/4604-139-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4604-137-0x0000000000000000-mapping.dmp

Download
memory/5080-154-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads