Analysis
-
max time kernel
150s -
max time network
148s -
platform
windows10-2004_x64 -
resource
win10v2004-20220414-en -
submitted
23-06-2022 15:09
Static task
static1
Behavioral task
behavioral1
Sample
vbc.exe
Resource
win7-20220414-en
General
-
Target
vbc.exe
-
Size
757KB
-
MD5
1f65d7826fbcc2d6c50f6c493c901588
-
SHA1
4290f6b300595e807e8cacd5ff172b0a0f37c845
-
SHA256
d0c85ba5e6d88e1e0b5f068f125829b4e224b90be2488f2c21317447dc51fb9e
-
SHA512
e3c15d0229433441300b4e129748c10e966de22c926d641b665a91caf7c371a390004abc24d953a80887be4a791514e1670cb0e8723d6a19ffa5210cd9124f5a
Malware Config
Extracted
xloader
2.9
v4qp
je1XQKU1LfJPVLk=
nvf41a7FsTLs6uB/g+CR
U7mryF6DctZn6GEjr9Bm4g==
1SONGrPdh7wGEOXp3g==
2xX859r7qOFq7GYkr9Bm4g==
IYtzVUx0Oo0HmZawLQAARDvBf4dL
NH3iuBPNSzZTvpw/4KaG
rDehfiqIPbdMBS8G1g==
xhb2uJ0eBwo7k3djqxh60xoNt4VoeQ==
AFtKux3JgPGRkx3xUsciR6piSg==
m+3VoJadWcBvOAPpzKUNPoAxyplS
1DWKULdka3mxIKhEqGxQr7gxyplS
DGlFGBqWi5CtrCX9alyTuPzq
muvVM4slyTfxORwAZisVksCM78aSEVo=
D3biNgUbyg9E5pl+
/+1QLPssvl/Xxg==
I4lzTjaAcc1iBS8G1g==
wSwc4MmbShojhlZCrniTuPzq
jN5YO6ZXSfJPVLk=
4TUS4+ANuqHCRTM9sniTuPzq
7Ssfd9ru/HPzWMZ42Z+E
TJl+UkzTsY6g86lyegOU3gw=
0juvfNqRgmJwwpc/4KaG
WJuGVDdhQj1Ux5s/4KaG
FHdjPTRtZc1rPwr8zUQfXogxyplS
1yUI9+gAwMPuYMWALzWc+w==
CW1UNSZVQKAlmQep/XYDYGot8HZX30M=
vRqFbt1zJfH304GOeAOU3gw=
P5CIQS65moOingakeAOU3gw=
d9dBqqBI+vgR0Q==
1zElifgR7DjBQhEgnWqTuPzq
Z60BYmHr5eHr4qiedQOU3gw=
HWU4MRo7NYMKvenJppIKPWxeSQ==
e3BN71BTWfJPVLk=
wy7WdMhKC6ZIBS8G1g==
XquYfmaLfMtjMdvi0UJCve3YPQ9/3VBp
KZGA1zHJgWB5XAUCtW5auQQ=
xiMia8hyQfJPVLk=
fs3InobYUU1v
g/FWtqk8QVV2fvykeAOU3gw=
Gk0rieTkzD/cYMxmtQij4wb9
sQ92QpZSTOWOi15IKJWeEYMaENE=
DmfkxD7hjeFXBS8G1g==
AF/WMxGNm+1qwhvu59Ziy96hOpN/3VBp
mPxzMqdFvl/Xxg==
wbYTecjCf2dE5pl+
bM22jGRvLWbm3dd/g+CR
3T4iifwiBwdGDun0r9Bm4g==
hd/Zp4qeQhkDA7I+sXVavwQ=
Y6UNZTVzVVVE5pl+
4V68Jxr1n3hpa/igeQOU3gw=
oxRu5bztvl/Xxg==
IoXeT3nFp316WK0=
LSJ+4y5JmmIN3w==
svtsPL5PAtT1ZVBKmNxkR6piSg==
Tqv+1CqslWNp1Z1v4rzl6xM=
nOjWOqSkigqvKn8jr9Bm4g==
5vNHav9pXUs=
51u5hOzjug9E5pl+
BV3fNCavl2Z69CjsSAHGFiPi
Pov+YD5zJgUUinyAxxhVrb6W7saSEVo=
sfvz0cLqvl/Xxg==
MZ0a3y3CnzpW1DsSU01xouShpVtF
ogaE4dJvYFB76MzDJpoQR6piSg==
erilb.com
Signatures
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suricata: ET MALWARE FormBook CnC Checkin (GET)
suricata: ET MALWARE FormBook CnC Checkin (GET)
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suricata: ET MALWARE FormBook CnC Checkin (POST) M2
suricata: ET MALWARE FormBook CnC Checkin (POST) M2
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Xloader Payload 4 IoCs
Processes:
resource yara_rule behavioral2/memory/428-139-0x0000000000400000-0x000000000042C000-memory.dmp xloader behavioral2/memory/428-141-0x0000000000400000-0x000000000042C000-memory.dmp xloader behavioral2/memory/4688-148-0x0000000000700000-0x000000000072C000-memory.dmp xloader behavioral2/memory/4688-152-0x0000000000700000-0x000000000072C000-memory.dmp xloader -
Adds policy Run key to start application 2 TTPs 2 IoCs
Processes:
wscript.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run wscript.exe Set value (str) \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\XRRHFVV8_0H = "C:\\Program Files (x86)\\Y3fp\\ybadkzixlhwx.exe" wscript.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
vbc.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-1081944012-3634099177-1681222835-1000\Control Panel\International\Geo\Nation vbc.exe -
Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
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Uses the VBS compiler for execution 1 TTPs
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Suspicious use of SetThreadContext 3 IoCs
Processes:
vbc.exevbc.exewscript.exedescription pid process target process PID 4068 set thread context of 428 4068 vbc.exe vbc.exe PID 428 set thread context of 2180 428 vbc.exe Explorer.EXE PID 4688 set thread context of 2180 4688 wscript.exe Explorer.EXE -
Drops file in Program Files directory 4 IoCs
Processes:
wscript.exeExplorer.EXEdescription ioc process File opened for modification C:\Program Files (x86)\Y3fp\ybadkzixlhwx.exe wscript.exe File opened for modification C:\Program Files (x86)\Y3fp Explorer.EXE File created C:\Program Files (x86)\Y3fp\ybadkzixlhwx.exe Explorer.EXE File opened for modification C:\Program Files (x86)\Y3fp\ybadkzixlhwx.exe Explorer.EXE -
Processes:
wscript.exedescription ioc process Key created \Registry\User\S-1-5-21-1081944012-3634099177-1681222835-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2 wscript.exe -
Suspicious behavior: EnumeratesProcesses 45 IoCs
Processes:
vbc.exevbc.exewscript.exepid process 4068 vbc.exe 428 vbc.exe 428 vbc.exe 428 vbc.exe 428 vbc.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
Explorer.EXEpid process 2180 Explorer.EXE -
Suspicious behavior: MapViewOfSection 7 IoCs
Processes:
vbc.exewscript.exepid process 428 vbc.exe 428 vbc.exe 428 vbc.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe 4688 wscript.exe -
Suspicious use of AdjustPrivilegeToken 3 IoCs
Processes:
vbc.exevbc.exewscript.exedescription pid process Token: SeDebugPrivilege 4068 vbc.exe Token: SeDebugPrivilege 428 vbc.exe Token: SeDebugPrivilege 4688 wscript.exe -
Suspicious use of WriteProcessMemory 21 IoCs
Processes:
vbc.exeExplorer.EXEwscript.exedescription pid process target process PID 4068 wrote to memory of 428 4068 vbc.exe vbc.exe PID 4068 wrote to memory of 428 4068 vbc.exe vbc.exe PID 4068 wrote to memory of 428 4068 vbc.exe vbc.exe PID 4068 wrote to memory of 428 4068 vbc.exe vbc.exe PID 4068 wrote to memory of 428 4068 vbc.exe vbc.exe PID 4068 wrote to memory of 428 4068 vbc.exe vbc.exe PID 2180 wrote to memory of 4688 2180 Explorer.EXE wscript.exe PID 2180 wrote to memory of 4688 2180 Explorer.EXE wscript.exe PID 2180 wrote to memory of 4688 2180 Explorer.EXE wscript.exe PID 4688 wrote to memory of 4912 4688 wscript.exe cmd.exe PID 4688 wrote to memory of 4912 4688 wscript.exe cmd.exe PID 4688 wrote to memory of 4912 4688 wscript.exe cmd.exe PID 4688 wrote to memory of 3232 4688 wscript.exe cmd.exe PID 4688 wrote to memory of 3232 4688 wscript.exe cmd.exe PID 4688 wrote to memory of 3232 4688 wscript.exe cmd.exe PID 4688 wrote to memory of 1656 4688 wscript.exe cmd.exe PID 4688 wrote to memory of 1656 4688 wscript.exe cmd.exe PID 4688 wrote to memory of 1656 4688 wscript.exe cmd.exe PID 4688 wrote to memory of 1092 4688 wscript.exe Firefox.exe PID 4688 wrote to memory of 1092 4688 wscript.exe Firefox.exe PID 4688 wrote to memory of 1092 4688 wscript.exe Firefox.exe -
System policy modification 1 TTPs 1 IoCs
Processes:
wscript.exedescription ioc process Key created \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer wscript.exe
Processes
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C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- Drops file in Program Files directory
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\vbc.exe"C:\Users\Admin\AppData\Local\Temp\vbc.exe"2⤵
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\vbc.exe"{path}"3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\SysWOW64\wscript.exe"C:\Windows\SysWOW64\wscript.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
- System policy modification
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C:\Windows\SysWOW64\cmd.exe/c del "C:\Users\Admin\AppData\Local\Temp\vbc.exe"3⤵
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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" /V3⤵
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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" /V3⤵
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C:\Program Files\Mozilla Firefox\Firefox.exe"C:\Program Files\Mozilla Firefox\Firefox.exe"3⤵
Network
MITRE ATT&CK Matrix ATT&CK v6
Replay Monitor
Loading Replay Monitor...
Downloads
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C:\Users\Admin\AppData\Local\Temp\DB1Filesize
40KB
MD5b608d407fc15adea97c26936bc6f03f6
SHA1953e7420801c76393902c0d6bb56148947e41571
SHA256b281ce54125d4250a80f48fcc02a8eea53f2c35c3b726e2512c3d493da0013bf
SHA512cc96ddf4bf90d6aaa9d86803cb2aa30cd8e9b295aee1bd5544b88aeab63dc60bb1d4641e846c9771bab51aabbfbcd984c6d3ee83b96f5b65d09c0841d464b9e4
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C:\Users\Admin\AppData\Local\Temp\DB1Filesize
48KB
MD5349e6eb110e34a08924d92f6b334801d
SHA1bdfb289daff51890cc71697b6322aa4b35ec9169
SHA256c9fd7be4579e4aa942e8c2b44ab10115fa6c2fe6afd0c584865413d9d53f3b2a
SHA5122a635b815a5e117ea181ee79305ee1baf591459427acc5210d8c6c7e447be3513ead871c605eb3d32e4ab4111b2a335f26520d0ef8c1245a4af44e1faec44574
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memory/428-141-0x0000000000400000-0x000000000042C000-memory.dmpFilesize
176KB
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memory/428-143-0x0000000001C30000-0x0000000001C41000-memory.dmpFilesize
68KB
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memory/428-142-0x00000000018E0000-0x0000000001C2A000-memory.dmpFilesize
3.3MB
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memory/428-138-0x0000000000000000-mapping.dmp
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memory/428-139-0x0000000000400000-0x000000000042C000-memory.dmpFilesize
176KB
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memory/1656-156-0x0000000000000000-mapping.dmp
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memory/2180-144-0x0000000007860000-0x00000000079DF000-memory.dmpFilesize
1.5MB
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memory/2180-151-0x0000000002700000-0x00000000027CD000-memory.dmpFilesize
820KB
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memory/2180-153-0x0000000002700000-0x00000000027CD000-memory.dmpFilesize
820KB
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memory/3232-154-0x0000000000000000-mapping.dmp
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memory/4068-137-0x0000000004F80000-0x0000000004F8A000-memory.dmpFilesize
40KB
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memory/4068-136-0x00000000050E0000-0x000000000517C000-memory.dmpFilesize
624KB
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memory/4068-135-0x0000000004FA0000-0x0000000005032000-memory.dmpFilesize
584KB
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memory/4068-134-0x0000000005550000-0x0000000005AF4000-memory.dmpFilesize
5.6MB
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memory/4068-133-0x0000000000510000-0x00000000005D4000-memory.dmpFilesize
784KB
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memory/4688-152-0x0000000000700000-0x000000000072C000-memory.dmpFilesize
176KB
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memory/4688-150-0x00000000026E0000-0x0000000002770000-memory.dmpFilesize
576KB
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memory/4688-149-0x00000000028B0000-0x0000000002BFA000-memory.dmpFilesize
3.3MB
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memory/4688-147-0x0000000000D80000-0x0000000000DA7000-memory.dmpFilesize
156KB
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memory/4688-148-0x0000000000700000-0x000000000072C000-memory.dmpFilesize
176KB
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memory/4688-145-0x0000000000000000-mapping.dmp
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memory/4912-146-0x0000000000000000-mapping.dmp