formbook | 3290889312a146f7ed60102439cb580f84057c98c530c31cae7461b2764f5ad4

Analysis

max time kernel
150s
max time network
147s
platform
windows10-2004_x64
resource
win10v2004-20221111-en
resource tags

arch:x64arch:x86image:win10v2004-20221111-enlocale:en-usos:windows10-2004-x64system
submitted
27-01-2023 10:12

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General

Target

f020e4ab9dacdc83e6b1a4537b5338bc.exe
Size

249KB
MD5

f020e4ab9dacdc83e6b1a4537b5338bc
SHA1

2006686a3a91ed7892cffc9b1bc68c57d59118b3
SHA256

3290889312a146f7ed60102439cb580f84057c98c530c31cae7461b2764f5ad4
SHA512

b959b9b3cebd08a09dddad4933be828a3ce4d45269d64121cb2009898e2cc0508fd36ee7b3bb1dc00ed32ca7071d59a0173b3d17ac88184b8a083ef64820585a
SSDEEP

6144:/Ya6BvdSq4hdciqjFhWgbFGj9xyD9LDRHOW4zVQ60HIV0yLP:/YLFL4hdcfjGj9xyVFOPWyz

Score

10^/10

formbook xloader poub loader persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

poub

Decoy

WY0eksfISzRg4O6c+opnGL6gaw==

moRjn9ExtYi8UmUo+Tya

2vME+GedoxzFnuLXesUoVj4=

EvW4JWJ1NQ8nN3tA3SM=

2mK9efMZMgN1VOs=

8d0jua5b0J6AQEW7

/2cyThOd37DSTYMASDye4Q0t/Vs=

ral+tbIh2KKAQEW7

YLY9jsPtYB/FRmMo+Tya

R1WcElWAMtFxFrVqtZT2ZpIS9xRZNho=

KFXGg/T1pCC9GjrxUPTcjw==

8mMlK5nDwjjPFTP5jMtAtQ0t/Vs=

c7am8nhhlCo=

UW91trZj6dENxuRdpxOvW1Cf

sjOMUcvq6lYJCZEfV4euFzY=

62nBgPjdmWQkmWElww==

64E8JqA1aruSUvw=

NqI1reXpcR+REye0

8+y1oOsbjgSyEhjXUPTcjw==

Rx9by8gNBwN1VOs=

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 4 IoCs

rat

Processes:

resource	yara_rule
behavioral2/memory/4576-139-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4576-145-0x0000000000400000-0x000000000042C000-memory.dmp	xloader
behavioral2/memory/4840-148-0x0000000000510000-0x000000000053C000-memory.dmp	xloader
behavioral2/memory/4840-153-0x0000000000510000-0x000000000053C000-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:

msdt.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	msdt.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\3FMHBZIXN = "C:\\Program Files (x86)\\Hxpxtft\\msbrchzlj.exe"	msdt.exe

Executes dropped EXE 3 IoCs

Processes:

ozggicxy.exeozggicxy.exemsbrchzlj.exe

pid process

4680 ozggicxy.exe
4576 ozggicxy.exe
2380 msbrchzlj.exe

pid	process
4680	ozggicxy.exe
4576	ozggicxy.exe
2380	msbrchzlj.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:

ozggicxy.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2971393436-602173351-1645505021-1000\Control Panel\International\Geo\Nation	ozggicxy.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

Suspicious use of SetThreadContext 4 IoCs

Processes:

ozggicxy.exeozggicxy.exemsdt.exe

description	pid	process	target process
PID 4680 set thread context of 4576	4680	ozggicxy.exe	ozggicxy.exe
PID 4576 set thread context of 792	4576	ozggicxy.exe	Explorer.EXE
PID 4576 set thread context of 792	4576	ozggicxy.exe	Explorer.EXE
PID 4840 set thread context of 792	4840	msdt.exe	Explorer.EXE

Drops file in Program Files directory 4 IoCs

Processes:

msdt.exeExplorer.EXE

description	ioc	process
File opened for modification	C:\Program Files (x86)\Hxpxtft\msbrchzlj.exe	msdt.exe
File opened for modification	C:\Program Files (x86)\Hxpxtft	Explorer.EXE
File created	C:\Program Files (x86)\Hxpxtft\msbrchzlj.exe	Explorer.EXE
File opened for modification	C:\Program Files (x86)\Hxpxtft\msbrchzlj.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:

msdt.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2971393436-602173351-1645505021-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	msdt.exe

Suspicious behavior: EnumeratesProcesses 56 IoCs

Processes:

ozggicxy.exemsdt.exe

pid	process
4576	ozggicxy.exe
4576	ozggicxy.exe
4576	ozggicxy.exe
4576	ozggicxy.exe
4576	ozggicxy.exe
4576	ozggicxy.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

792 Explorer.EXE
Suspicious behavior: MapViewOfSection 9 IoCs

Processes:

ozggicxy.exeozggicxy.exemsdt.exe

pid process

4680 ozggicxy.exe
4576 ozggicxy.exe
4576 ozggicxy.exe
4576 ozggicxy.exe
4576 ozggicxy.exe
4840 msdt.exe
4840 msdt.exe
4840 msdt.exe
4840 msdt.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

ozggicxy.exemsdt.exe

description pid process

Token: SeDebugPrivilege 4576 ozggicxy.exe
Token: SeDebugPrivilege 4840 msdt.exe

pid	process
792	Explorer.EXE

pid	process
4680	ozggicxy.exe
4576	ozggicxy.exe
4576	ozggicxy.exe
4576	ozggicxy.exe
4576	ozggicxy.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe
4840	msdt.exe

description	pid	process
Token: SeDebugPrivilege	4576	ozggicxy.exe
Token: SeDebugPrivilege	4840	msdt.exe

Suspicious use of WriteProcessMemory 25 IoCs

Processes:

f020e4ab9dacdc83e6b1a4537b5338bc.exeozggicxy.exeozggicxy.exemsdt.exeExplorer.EXE

description	pid	process	target process
PID 1724 wrote to memory of 4680	1724	f020e4ab9dacdc83e6b1a4537b5338bc.exe	ozggicxy.exe
PID 1724 wrote to memory of 4680	1724	f020e4ab9dacdc83e6b1a4537b5338bc.exe	ozggicxy.exe
PID 1724 wrote to memory of 4680	1724	f020e4ab9dacdc83e6b1a4537b5338bc.exe	ozggicxy.exe
PID 4680 wrote to memory of 4576	4680	ozggicxy.exe	ozggicxy.exe
PID 4680 wrote to memory of 4576	4680	ozggicxy.exe	ozggicxy.exe
PID 4680 wrote to memory of 4576	4680	ozggicxy.exe	ozggicxy.exe
PID 4680 wrote to memory of 4576	4680	ozggicxy.exe	ozggicxy.exe
PID 4576 wrote to memory of 4840	4576	ozggicxy.exe	msdt.exe
PID 4576 wrote to memory of 4840	4576	ozggicxy.exe	msdt.exe
PID 4576 wrote to memory of 4840	4576	ozggicxy.exe	msdt.exe
PID 4840 wrote to memory of 4428	4840	msdt.exe	cmd.exe
PID 4840 wrote to memory of 4428	4840	msdt.exe	cmd.exe
PID 4840 wrote to memory of 4428	4840	msdt.exe	cmd.exe
PID 4840 wrote to memory of 2980	4840	msdt.exe	cmd.exe
PID 4840 wrote to memory of 2980	4840	msdt.exe	cmd.exe
PID 4840 wrote to memory of 2980	4840	msdt.exe	cmd.exe
PID 4840 wrote to memory of 2428	4840	msdt.exe	cmd.exe
PID 4840 wrote to memory of 2428	4840	msdt.exe	cmd.exe
PID 4840 wrote to memory of 2428	4840	msdt.exe	cmd.exe
PID 4840 wrote to memory of 3724	4840	msdt.exe	Firefox.exe
PID 4840 wrote to memory of 3724	4840	msdt.exe	Firefox.exe
PID 4840 wrote to memory of 3724	4840	msdt.exe	Firefox.exe
PID 792 wrote to memory of 2380	792	Explorer.EXE	msbrchzlj.exe
PID 792 wrote to memory of 2380	792	Explorer.EXE	msbrchzlj.exe
PID 792 wrote to memory of 2380	792	Explorer.EXE	msbrchzlj.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:792

C:\Users\Admin\AppData\Local\Temp\f020e4ab9dacdc83e6b1a4537b5338bc.exe
"C:\Users\Admin\AppData\Local\Temp\f020e4ab9dacdc83e6b1a4537b5338bc.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:1724

C:\Users\Admin\AppData\Local\Temp\ozggicxy.exe
"C:\Users\Admin\AppData\Local\Temp\ozggicxy.exe" C:\Users\Admin\AppData\Local\Temp\rznlc.m
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:4680

C:\Users\Admin\AppData\Local\Temp\ozggicxy.exe
"C:\Users\Admin\AppData\Local\Temp\ozggicxy.exe"
4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:4576

C:\Windows\SysWOW64\msdt.exe
"C:\Windows\SysWOW64\msdt.exe"
5⤵
- 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:4840

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\ozggicxy.exe"
6⤵
PID:4428

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
6⤵
PID:2980

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
6⤵
PID:2428

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
6⤵
PID:3724

C:\Program Files (x86)\Hxpxtft\msbrchzlj.exe
"C:\Program Files (x86)\Hxpxtft\msbrchzlj.exe"
2⤵
- Executes dropped EXE
PID:2380

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 444 -p 2380 -ip 2380
1⤵
PID:2628

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

Query Registry

T1012

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)\Hxpxtft\msbrchzlj.exe
Filesize
50KB

MD5
f73f9940d91bb012db1ea328b3897c82

SHA1
a2168931605a10f3604dc2c24504d82a51ab6e99

SHA256
2cd78183a6fca82b8e05a38466051f56529a1f5843cfd6bf7274ffe30e9abf57

SHA512
e74c2ac031aab4ede16a0b2525a22545b555c3e659fed10079a9921e3620e42b22f2052ec5f930519881a3b7e2dd1afbd0931d1696d99e516466314b90aa217a

Download Submit
C:\Program Files (x86)\Hxpxtft\msbrchzlj.exe
Filesize
50KB

MD5
f73f9940d91bb012db1ea328b3897c82

SHA1
a2168931605a10f3604dc2c24504d82a51ab6e99

SHA256
2cd78183a6fca82b8e05a38466051f56529a1f5843cfd6bf7274ffe30e9abf57

SHA512
e74c2ac031aab4ede16a0b2525a22545b555c3e659fed10079a9921e3620e42b22f2052ec5f930519881a3b7e2dd1afbd0931d1696d99e516466314b90aa217a

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\nfekeauyiy.uih
Filesize
196KB

MD5
62db7e07dd4481e9b594a97c4b97281a

SHA1
0996af042cee334be6c8d71b689e1c3405dba59e

SHA256
e0ab3c275ba03990a2f28abd8f37f8ff078fb8dce7fb939c6029631a5b4018a6

SHA512
90823ffa0232b7c18bb927dfbd87f4e5220bcf8e23f55d6638ac6ca26c29341c2ed80b2039f3893323a315071f64c572cbee70f33dd9fa2c723465a6b476e23a

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

MD5
f73f9940d91bb012db1ea328b3897c82

SHA1
a2168931605a10f3604dc2c24504d82a51ab6e99

SHA256
2cd78183a6fca82b8e05a38466051f56529a1f5843cfd6bf7274ffe30e9abf57

SHA512
e74c2ac031aab4ede16a0b2525a22545b555c3e659fed10079a9921e3620e42b22f2052ec5f930519881a3b7e2dd1afbd0931d1696d99e516466314b90aa217a

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

MD5
f73f9940d91bb012db1ea328b3897c82

SHA1
a2168931605a10f3604dc2c24504d82a51ab6e99

SHA256
2cd78183a6fca82b8e05a38466051f56529a1f5843cfd6bf7274ffe30e9abf57

SHA512
e74c2ac031aab4ede16a0b2525a22545b555c3e659fed10079a9921e3620e42b22f2052ec5f930519881a3b7e2dd1afbd0931d1696d99e516466314b90aa217a

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

MD5
f73f9940d91bb012db1ea328b3897c82

SHA1
a2168931605a10f3604dc2c24504d82a51ab6e99

SHA256
2cd78183a6fca82b8e05a38466051f56529a1f5843cfd6bf7274ffe30e9abf57

SHA512
e74c2ac031aab4ede16a0b2525a22545b555c3e659fed10079a9921e3620e42b22f2052ec5f930519881a3b7e2dd1afbd0931d1696d99e516466314b90aa217a

Download Submit
C:\Users\Admin\AppData\Local\Temp\rznlc.m
Filesize
5KB

MD5
56075b8221603dd51f2e7cc79097c954

SHA1
0df59bf418b3398bb248b63ff834e7dea05596f0

SHA256
0775d03420d1805c24855734fdcbe12f7dc1d1bd150b345274495054b41576dc

SHA512
47bb8745800a315fb7f8b6717a70fa6b5c648309c02954bb41faccd29c42be7d8e6a1d1de1cae946e2893cb0660be93fd6487891364941279656723db004086c

Download Submit
memory/792-144-0x0000000002D50000-0x0000000002EE6000-memory.dmp

Filesize
1.6MB

Download
memory/792-154-0x00000000085C0000-0x00000000086B0000-memory.dmp

Filesize
960KB

Download
memory/792-152-0x00000000085C0000-0x00000000086B0000-memory.dmp

Filesize
960KB

Download
memory/792-142-0x0000000002C40000-0x0000000002D43000-memory.dmp

Filesize
1.0MB

Download
memory/2380-159-0x0000000000000000-mapping.dmp

Download
memory/2428-157-0x0000000000000000-mapping.dmp

Download
memory/2980-155-0x0000000000000000-mapping.dmp

Download
memory/4428-149-0x0000000000000000-mapping.dmp

Download
memory/4576-139-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4576-140-0x00000000009C0000-0x0000000000D0A000-memory.dmp

Filesize
3.3MB

Download
memory/4576-137-0x0000000000000000-mapping.dmp

Download
memory/4576-145-0x0000000000400000-0x000000000042C000-memory.dmp

Filesize
176KB

Download
memory/4576-141-0x0000000000D30000-0x0000000000D41000-memory.dmp

Filesize
68KB

Download
memory/4576-143-0x0000000000D90000-0x0000000000DA1000-memory.dmp

Filesize
68KB

Download
memory/4680-132-0x0000000000000000-mapping.dmp

Download
memory/4840-146-0x0000000000000000-mapping.dmp

Download
memory/4840-153-0x0000000000510000-0x000000000053C000-memory.dmp

Filesize
176KB

Download
memory/4840-151-0x0000000002500000-0x0000000002590000-memory.dmp

Filesize
576KB

Download
memory/4840-150-0x00000000027E0000-0x0000000002B2A000-memory.dmp

Filesize
3.3MB

Download
memory/4840-147-0x00000000004A0000-0x00000000004F7000-memory.dmp

Filesize
348KB

Download
memory/4840-148-0x0000000000510000-0x000000000053C000-memory.dmp

Filesize
176KB

Download