formbook | 5f3d522c2e8fb5fa25bee03bdd61f8b957935e4209849358d41f49c39fe82ddc

Analysis

max time kernel
150s
max time network
152s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
28/09/2022, 10:59

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General

Target
DOC2022092856789098765560890.exe
Size 463KB
Sample220928-m3d56affe6
SHA256 5f3d522c2e8fb5fa25bee03bdd61f8b957935e4209849358d41f49c39fe82ddc
MD5 9fc5136c71809ca5116aa57f4ffc2f41
SHA1 ab592ed0edb886b9fb1cd2e8b90ef59b3f8d3d93
SHA512 2f4fc6cc58d14750e3220c2dfa49ac1587cc95e1386051e96b1b667f0b9715a90d581e85e33b8e99ecd8f7a8c0415844e1760d8ef592c2c00dee48d668c2f6ac
SSDEEP 6144:YbVNADxpXBOX/zDQbJlEwqgvw3kV1IPZIOPnjhda+:eNAvxOX/mJlzV1nOPnFd
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

formbook c1no rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

c1no

Decoy

SKHcqi+am5xGsHiCoXnH
BObxRpdRlNT5GCo3Eg8azNIQ
GPkN2SZ9gJOYqn4iaNIH6d1MRlk=
ZrdQ6Q4zd05LBFWPDc8=
KYQZEtvg85sq1t9jd7kazNIQ
KWu2/CZdnIFgf0p8
YlJ9mWmf+XkCjxzXSw==
nPeaENkZPzjWSh5DJiBVhlrTSx9V
GfUN8rKft59DsH2CoXnH
5ThnVCgjBm96jxzXSw==
pfb0D48Mk38v
uK6V0h16ziJXZuQ3NR8asKzT2Q==
QaxeYCJXoHFvKesgBSozIyC6bkTR8rbF
QT12wt/a0nsdrbY/oSGKqcq2wQ==
vfuiENwZZrvruTm5lHDF
iNsQyVnb3NHbtXyCoXnH
9jjn4jP8RyrjBYwNPvtfPg==
Wz1uwtUpdbrpwZXZq5HpXV7TSx9V
e9+RDvTx9HSZej/7PvtfPg==
oAeNwswNS6QgtnOdmcc=
qPubLUVHnOVnrg==
5hJj3x7DBmd7jxzXSw==
UJPc9LGnoAkXANI6tm/Q
AEuW4O/a+50iqzbmTQ==
zBtaGow/nqJDqD8o99ARRpY=
lvVy19o2FG5RbnI=
C+Mjuwiv9D38YjFlKlDxbWjTSx9V
EGubVd1LTkbdRNVPEzrP
N50fT05CnOVnrg==
KwYs8G/W6/uqC1DKQQ==
GFmHQM49XbHM2bRgzkGXqcq2wQ==
6ccOQNIwJxy1N0aCoXnH
QwoOaEt9su8HvXiCoXnH
hON/kiKJdadvQRQ5vYqtBI/Sh1E=
JGudBVkGfnujw8zRpsc=
DHAN9KmqplIDRg7NHtfRAY/Sh1E=
ugtLD50RHi3ap2TdSA==
sv8ZdLAjTJCpYO/ZTNARRpY=
BVPqCaFmwbZLyJndw57aPiss/NU9Zg==
In8wuf5zZl1ailWPDc8=
MHO6dBG7C2WDl1WPDc8=
5T97jQThPgkR5H4=
txScCkbBqZg1rH2CoXnH
VqP4PVVedxRNo25u/M0=
kt1nfiHFBWmSlKCQSmlupPSTQzpf
Q6pfESIJFHV0ekl/8MU=
W6v5CQA/FW5RbnI=
qA/HpzO2t6JB1+xLGAAazNIQ
LhI5pgG1BU1iiFWPDc8=
l42eVNJBRDM3ENwC9woazNIQ
eV5oGYwMk38v
DGILBVIJd5VP29dfyjuEuqGtbjMGkYXQHA==
sRdbmrbhGtN3rC+pwRONbN/IxlnLswMRFA==
twSnE+Mjg3oUTiBl
NosU+T2QjZyXm1WPDc8=
1TBn3TWymYsceDt3aLs4EtKbDIn2AsnF
4x5ht83A0Fx3jxzXSw==
0bnTtIWxGSgUTiBl
Oxc26HoHPXh8jJmR9E2zpC8t/NU9Zg==
UJwXuNYZSX+CklWPDc8=
zy1cD5Nys5RApmS1vQ2Vqcq2wQ==
Bd/1wxjHHSgUTiBl
KIQZq6PLHaPT09biuNHG+I/Sh1E=
f9gJPU9ERcTWvpNEsTKTqcq2wQ==
frankrijk-stijlvol.online

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook

Blocklisted process makes network request 1 IoCs

flow	pid	Process
7	1356	rundll32.exe

Loads dropped DLL 1 IoCs

pid	Process
1356	rundll32.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 3 IoCs

description	pid	Process	procid_target
PID 1972 set thread context of 1728	1972	DOC2022092856789098765560890.exe	27
PID 1728 set thread context of 1288	1728	regsvcs.exe	13
PID 1356 set thread context of 1288	1356	rundll32.exe	13

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

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3845472200-3839195424-595303356-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Suspicious behavior: EnumeratesProcesses 27 IoCs

pid	Process
1728	regsvcs.exe
1728	regsvcs.exe
1728	regsvcs.exe
1728	regsvcs.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
1728	regsvcs.exe
1728	regsvcs.exe
1728	regsvcs.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe
1356	rundll32.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	1728	regsvcs.exe
Token: SeDebugPrivilege	1356	rundll32.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1288	Explorer.EXE
1288	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1288	Explorer.EXE
1288	Explorer.EXE

Suspicious use of WriteProcessMemory 22 IoCs

description	pid	Process	procid_target
PID 1972 wrote to memory of 1728	1972	DOC2022092856789098765560890.exe	27
PID 1972 wrote to memory of 1728	1972	DOC2022092856789098765560890.exe	27
PID 1972 wrote to memory of 1728	1972	DOC2022092856789098765560890.exe	27
PID 1972 wrote to memory of 1728	1972	DOC2022092856789098765560890.exe	27
PID 1972 wrote to memory of 1728	1972	DOC2022092856789098765560890.exe	27
PID 1972 wrote to memory of 1728	1972	DOC2022092856789098765560890.exe	27
PID 1972 wrote to memory of 1728	1972	DOC2022092856789098765560890.exe	27
PID 1972 wrote to memory of 1728	1972	DOC2022092856789098765560890.exe	27
PID 1972 wrote to memory of 1728	1972	DOC2022092856789098765560890.exe	27
PID 1972 wrote to memory of 1728	1972	DOC2022092856789098765560890.exe	27
PID 1288 wrote to memory of 1356	1288	Explorer.EXE	28
PID 1288 wrote to memory of 1356	1288	Explorer.EXE	28
PID 1288 wrote to memory of 1356	1288	Explorer.EXE	28
PID 1288 wrote to memory of 1356	1288	Explorer.EXE	28
PID 1288 wrote to memory of 1356	1288	Explorer.EXE	28
PID 1288 wrote to memory of 1356	1288	Explorer.EXE	28
PID 1288 wrote to memory of 1356	1288	Explorer.EXE	28
PID 1356 wrote to memory of 1896	1356	rundll32.exe	31
PID 1356 wrote to memory of 1896	1356	rundll32.exe	31
PID 1356 wrote to memory of 1896	1356	rundll32.exe	31
PID 1356 wrote to memory of 1896	1356	rundll32.exe	31
PID 1356 wrote to memory of 1896	1356	rundll32.exe	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1288
- C:\Users\Admin\AppData\Local\Temp\DOC2022092856789098765560890.exe
  "C:\Users\Admin\AppData\Local\Temp\DOC2022092856789098765560890.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1972
- - C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe
    "C:\Windows\Microsoft.NET\Framework\v4.0.30319\regsvcs.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:1728
- C:\Windows\SysWOW64\rundll32.exe
  "C:\Windows\SysWOW64\rundll32.exe"
  2⤵
  - Blocklisted process makes network request
  - Loads dropped DLL
  - Suspicious use of SetThreadContext
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1356
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1896

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

T1112

Credential Access

Credentials in Files

T1081

Discovery

System Information Discovery

T1082

Lateral Movement

Collection

Data from Local System

T1005

Command and Control

Exfiltration

Impact

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Downloads

sqlite3.dll

Path \Users\Admin\AppData\Local\Temp\sqlite3.dll
Size 927KB
SHA256 1e6dccbdf8527abb53c289da920463b7895300d0d984cc7e91a3ecda4e673190
MD5 7fd80b1cc72dc580c02ca4cfbfb2592d
SHA1 18da905af878b27151b359cf1a7d0a650764e8a1
SHA512 13f7f29b5ed31c551aa5f27742557aa4d026a226087d6fcbca094819759ecc753a2c33b7422ae88dc6a4a0a966edb8485a18e59a0283ba2686cae5d78e0190a3
SSDEEP 24576:FMhZiQ/0DW4Qi1y534gZZ0LgQn5ArvSy4T/4gW:FtDW49k5IiC5n5Ardz
MD5 SHA1 SHA512 SSDEEP

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memory/1288-69-0x00000000064D0000-0x000000000662B000-memory.dmp

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memory/1288-78-0x0000000006E80000-0x0000000006FEF000-memory.dmp

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memory/1288-76-0x0000000006E80000-0x0000000006FEF000-memory.dmp

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memory/1356-77-0x0000000000090000-0x00000000000BD000-memory.dmp

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memory/1356-75-0x0000000000910000-0x000000000099F000-memory.dmp

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memory/1356-74-0x0000000002180000-0x0000000002483000-memory.dmp

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memory/1356-72-0x0000000000A60000-0x0000000000A6E000-memory.dmp

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memory/1356-73-0x0000000000090000-0x00000000000BD000-memory.dmp

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memory/1356-71-0x0000000075CF1000-0x0000000075CF3000-memory.dmp

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memory/1728-61-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/1728-68-0x0000000000270000-0x0000000000280000-memory.dmp

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memory/1728-67-0x0000000000A00000-0x0000000000D03000-memory.dmp

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memory/1728-65-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/1728-66-0x0000000000401000-0x000000000042F000-memory.dmp

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memory/1728-64-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/1728-59-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/1728-58-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/1972-54-0x0000000001220000-0x0000000001296000-memory.dmp

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memory/1972-57-0x0000000000210000-0x0000000000218000-memory.dmp

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memory/1972-56-0x0000000000200000-0x000000000020C000-memory.dmp

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memory/1972-55-0x00000000001F0000-0x00000000001F6000-memory.dmp

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