Analysis
-
max time kernel
150s -
max time network
153s -
platform
windows10-2004_x64 -
resource
win10v2004-20220812-en -
resource tags
arch:x64arch:x86image:win10v2004-20220812-enlocale:en-usos:windows10-2004-x64system -
submitted
18-11-2022 06:48
Static task
static1
Behavioral task
behavioral1
Sample
vbc.exe
Resource
win7-20221111-en
General
-
Target
vbc.exe
-
Size
374KB
-
MD5
7106216b183ca11deba630ff975a53b4
-
SHA1
6c2c163ffd926ea1f7bd6a8e8169957ee8c47dc3
-
SHA256
d3b626acf50c671d6bb5baff02df9f99d09b761c9deff6932d0600cbabb27d49
-
SHA512
6204f56205f38f30f1444f4981a0afb7cc74164aaf8744df2d4324b3c32dbcebb6070299a03927139c74bc078f3970cbd75e3fed27659983dcf51762450bc75a
-
SSDEEP
6144:MEa0Nv9Es7Gavr2RBjyN0fsi6/bFCEy74GhPun6I2aVjLbIozLgl6mJBkghG7PRS:XNGazUyN0ki6/bF21hm68jLbhg6mJBpn
Malware Config
Extracted
formbook
henz
IxWMb+jVsoinShuZJzk=
TPfKgQZ//oGnKr/J
EsK0WxD5kY65XOW1Td/5CxSUpCUytR7M
KebSmiCP9p8yUw==
HAt/ljkEuqMLHOLCi53Pv8MKX9qk
CY4ogZTwJc4vSw==
WWDIx5UYUDyepntE0YIAPca3/rI=
+Pkr01Lfb2rME7bL
S5nyK0p8jS2xdwQ=
W/oqvlO57LfkLcLHnQ==
zrrwtqkTLwxulm4l8FGopw==
AqucYext8bzFbOKthIm8E6gfVkUHxKY=
OfnjeDs78+RTcz4OHRl+
XKf1wwpZR5hLLjHgmUGOpQ==
JMyhSLoJPTCwn5o9zX2d8i1+
Wk54MBsDhWSVbnIRkQ==
7aaYR/tOhh9piTw5/KHSRwuK2iqgafw7pQ==
hH/EYxN+jC2xdwQ=
S0F4ORqDjS2xdwQ=
0o/UwXnuJ+sJp0cOHRl+
klE+E/jVelhT72wOHRl+
ZGvqyzaT9qfME7bL
czgajHaygm4=
KufYeyTiLhIGlzU6/38IM7IrqzhFa64=
oVNF+2VXWBL9jwGsK3Bw5TE=
iI3g6JaEalRvMDaz8AD4+vt0
nWtRAaSccRlLVg==
NtvDoS2UMcMRSA==
1t5MW/lEfjsUrFJeGXBw5TE=
UFixmi+P2cgqPRj09Sc=
MSuTonT5QhU11IGFYWKB6eJj
k4Lw3r+hTj9NF8+zgnu+Nsa3/rI=
NSN7fCqHln/S+RuZJzk=
dTUV1GY97NlVLsaSJXBw5TE=
8u5OLgNPRShyRRuZJzk=
BLTZ0G3iV0B5PvedL3Bw5TE=
ci8Y27nGCM69
JxF8W9/QoC2xdwQ=
KusZC8MsPClL1oMo8SA=
tW9XIP/VYTmVpWIDjIu1p5/ebhC9
pmc//mhFFgx3l1IOHRl+
MOsl9G5hQT6lhc0oLHWtrQ==
fXvSx46RRSiGjWphOnO0p8a3/rI=
D8Hx4JoDG+znbnIRkQ==
Dsfu2pqFJP0Kv0gX1CGX3Sw=
FcGnEr4fhW7ME7bL
hkc37Y3GF8gTMAw=
dnGZWjqPqYqgTxuZJzk=
iDEV43sIvE1j7psMiQ==
vb8qEoNQBus+mQXst1h2
46qCRt3j3cfneiudJjE=
8eoYvzW2PgDrffLWrav++Mf1TUUHxKY=
vqkFDa0HYztZ+G8ODZ7Qug==
+K/F0qEnTxACrzMR2OocXxecmq31afw7pQ==
Egwn/u1rq2uVbnIRkQ==
nFVH/3fvalaRbnIRkQ==
CvtveEUyyqUJLOiOKnBw5TE=
dmfN5LErTj9l/Icl8FGopw==
VAQtEMawYiNPaTxLIxdbpD9sZL0=
MBSMhSCOHdpCVQ==
jz95eCeaJc4vSw==
85N/Gcy+XicYq0cOHRl+
D/1B46soVTKObnIRkQ==
Hgytgwn25KqyVRuZJzk=
brennancorps.info
Signatures
-
Executes dropped EXE 2 IoCs
Processes:
taczgytc.exetaczgytc.exepid process 4652 taczgytc.exe 4644 taczgytc.exe -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
Processes:
taczgytc.exedescription ioc process Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation taczgytc.exe -
Uses the VBS compiler for execution 1 TTPs
-
Suspicious use of SetThreadContext 3 IoCs
Processes:
taczgytc.exetaczgytc.execmmon32.exedescription pid process target process PID 4652 set thread context of 4644 4652 taczgytc.exe taczgytc.exe PID 4644 set thread context of 3052 4644 taczgytc.exe Explorer.EXE PID 4592 set thread context of 3052 4592 cmmon32.exe Explorer.EXE -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.
-
Processes:
cmmon32.exedescription ioc process Key created \Registry\User\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2 cmmon32.exe -
Suspicious behavior: EnumeratesProcesses 62 IoCs
Processes:
taczgytc.execmmon32.exepid process 4644 taczgytc.exe 4644 taczgytc.exe 4644 taczgytc.exe 4644 taczgytc.exe 4644 taczgytc.exe 4644 taczgytc.exe 4644 taczgytc.exe 4644 taczgytc.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe -
Suspicious behavior: GetForegroundWindowSpam 1 IoCs
Processes:
Explorer.EXEpid process 3052 Explorer.EXE -
Suspicious behavior: MapViewOfSection 8 IoCs
Processes:
taczgytc.exetaczgytc.execmmon32.exepid process 4652 taczgytc.exe 4644 taczgytc.exe 4644 taczgytc.exe 4644 taczgytc.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe 4592 cmmon32.exe -
Suspicious use of AdjustPrivilegeToken 2 IoCs
Processes:
taczgytc.execmmon32.exedescription pid process Token: SeDebugPrivilege 4644 taczgytc.exe Token: SeDebugPrivilege 4592 cmmon32.exe -
Suspicious use of WriteProcessMemory 13 IoCs
Processes:
vbc.exetaczgytc.exeExplorer.EXEcmmon32.exedescription pid process target process PID 1096 wrote to memory of 4652 1096 vbc.exe taczgytc.exe PID 1096 wrote to memory of 4652 1096 vbc.exe taczgytc.exe PID 1096 wrote to memory of 4652 1096 vbc.exe taczgytc.exe PID 4652 wrote to memory of 4644 4652 taczgytc.exe taczgytc.exe PID 4652 wrote to memory of 4644 4652 taczgytc.exe taczgytc.exe PID 4652 wrote to memory of 4644 4652 taczgytc.exe taczgytc.exe PID 4652 wrote to memory of 4644 4652 taczgytc.exe taczgytc.exe PID 3052 wrote to memory of 4592 3052 Explorer.EXE cmmon32.exe PID 3052 wrote to memory of 4592 3052 Explorer.EXE cmmon32.exe PID 3052 wrote to memory of 4592 3052 Explorer.EXE cmmon32.exe PID 4592 wrote to memory of 1804 4592 cmmon32.exe Firefox.exe PID 4592 wrote to memory of 1804 4592 cmmon32.exe Firefox.exe PID 4592 wrote to memory of 1804 4592 cmmon32.exe Firefox.exe
Processes
-
C:\Windows\Explorer.EXEC:\Windows\Explorer.EXE1⤵
- 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 WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\taczgytc.exe"C:\Users\Admin\AppData\Local\Temp\taczgytc.exe"3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\taczgytc.exe"C:\Users\Admin\AppData\Local\Temp\taczgytc.exe"4⤵
- Executes dropped EXE
- 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\cmmon32.exe"C:\Windows\SysWOW64\cmmon32.exe"2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
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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
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Downloads
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C:\Users\Admin\AppData\Local\Temp\mzndobgjz.boFilesize
185KB
MD50d1d9c7fd6822452454a7c267358a987
SHA136e819ed24bd5ade049f02ccaf8445926ac570d6
SHA256081e553634e1e687b29f7a74efed313c167da5483298afe4d306a9dec53383a0
SHA512ae48ce96f9c66c706b19296af75060da88c22a73fd1b5f9545ad11f53c44f1b8d86411052635dd3971c7f5a741a5d9d1d603dbb4431da113cdd384a98d94d2de
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C:\Users\Admin\AppData\Local\Temp\qudpusdsw.tdvFilesize
5KB
MD50e2b0c956d02ffa7be574c3e7226dc2d
SHA16c30eee43b324e421e2e6e24ac666a59120aa682
SHA256f489627db6a48adb35927371e9a6105bc852f7b4dc257876c052bec083c09666
SHA5126587c2466b452b486c4a1de01aa0c516c6c18faee460edddda7e520dcca549a70b5cde6a4eb5c5d535583f05e96b924ef8efd99c8806bcd20286b881154781bd
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C:\Users\Admin\AppData\Local\Temp\taczgytc.exeFilesize
343KB
MD53670d0b8a72e51141fe55836d663a1cd
SHA129f2446d166679a8462bfc91f92af8e49c6d70d2
SHA256e9f11c8aef527b467deef587f26f417e33653c1a48962beef3881ba2054ec23b
SHA5126010e80b94dba3c298e9d528aef2cc4fb199d82f0ec3c5694447c28fe7922977a4c2d72d94a4b401aa5d3bce28026337364d810bc681eb77f8068fc50a6a9fa7
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C:\Users\Admin\AppData\Local\Temp\taczgytc.exeFilesize
343KB
MD53670d0b8a72e51141fe55836d663a1cd
SHA129f2446d166679a8462bfc91f92af8e49c6d70d2
SHA256e9f11c8aef527b467deef587f26f417e33653c1a48962beef3881ba2054ec23b
SHA5126010e80b94dba3c298e9d528aef2cc4fb199d82f0ec3c5694447c28fe7922977a4c2d72d94a4b401aa5d3bce28026337364d810bc681eb77f8068fc50a6a9fa7
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C:\Users\Admin\AppData\Local\Temp\taczgytc.exeFilesize
343KB
MD53670d0b8a72e51141fe55836d663a1cd
SHA129f2446d166679a8462bfc91f92af8e49c6d70d2
SHA256e9f11c8aef527b467deef587f26f417e33653c1a48962beef3881ba2054ec23b
SHA5126010e80b94dba3c298e9d528aef2cc4fb199d82f0ec3c5694447c28fe7922977a4c2d72d94a4b401aa5d3bce28026337364d810bc681eb77f8068fc50a6a9fa7
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memory/3052-143-0x0000000007EF0000-0x0000000008016000-memory.dmpFilesize
1.1MB
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memory/3052-154-0x0000000008020000-0x000000000816C000-memory.dmpFilesize
1.3MB
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memory/3052-152-0x0000000008020000-0x000000000816C000-memory.dmpFilesize
1.3MB
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memory/3052-150-0x0000000007EF0000-0x0000000008016000-memory.dmpFilesize
1.1MB
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memory/4592-147-0x0000000000F30000-0x0000000000F3C000-memory.dmpFilesize
48KB
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memory/4592-148-0x0000000000A00000-0x0000000000A2D000-memory.dmpFilesize
180KB
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memory/4592-153-0x0000000000A00000-0x0000000000A2D000-memory.dmpFilesize
180KB
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memory/4592-144-0x0000000000000000-mapping.dmp
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memory/4592-151-0x0000000002720000-0x00000000027AF000-memory.dmpFilesize
572KB
-
memory/4592-149-0x0000000002970000-0x0000000002CBA000-memory.dmpFilesize
3.3MB
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memory/4644-145-0x0000000000400000-0x000000000042F000-memory.dmpFilesize
188KB
-
memory/4644-146-0x0000000000401000-0x000000000042F000-memory.dmpFilesize
184KB
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memory/4644-140-0x0000000000401000-0x000000000042F000-memory.dmpFilesize
184KB
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memory/4644-139-0x0000000000400000-0x000000000042F000-memory.dmpFilesize
188KB
-
memory/4644-141-0x0000000001700000-0x0000000001A4A000-memory.dmpFilesize
3.3MB
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memory/4644-142-0x0000000001150000-0x0000000001160000-memory.dmpFilesize
64KB
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memory/4644-137-0x0000000000000000-mapping.dmp
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memory/4652-132-0x0000000000000000-mapping.dmp