formbook | f1cb8bd9cdf78abe8ebb1fdffe785c8a681f3c984c5f06a77b7de74934c64aa3

Analysis

max time kernel
150s
max time network
147s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
14/02/2023, 14:58

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General

Target
HiU4VL9BMkwVhsG.exe
Size 975KB
Sample230214-sb6c8aec32
SHA256 f1cb8bd9cdf78abe8ebb1fdffe785c8a681f3c984c5f06a77b7de74934c64aa3
MD5 bac08de138a8d2e74a66156c8d8b42f6
SHA1 30eed15de6a8f94d8dd557b7443edb70d8170a94
SHA512 f0058e11686cf72a761e575ec57e7b7f4cfec601a5edf864b1558903671dc1322feaa9aaaf08814a2decd21813b7c677503ca86c37b502775df88bce2e3ab2fd
SSDEEP 24576:oj2t7fueDyKQPSDQzFbri+FRYOUhTbkMgcM9FDUpsLEev:w2Jueejz4+FRwvkMgc052OEe
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

formbook g44n rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

g44n

Decoy

t60gB4YRvsDLttd9HG4=
xck8G7COQ+g7VIpX
BQQF3mmpLPskhQ==
eLWwmzNyK6ee+nF1jDvvkxuSGA==
3tlgNOzw8BBjpNOQMnc=
nOpNEJhoU0h+00S9E1YfgA==
xcvTpljkjIyEdvhp+VcGFtJC
bZxOHr5CtzY4
rOD304X0u1DN/m7cbA==
Knixl0HJyEOOiNckwk8GFtJC
S4JMDRNTUAol
Vp9wSwNZSfY7VIpX
0Nf/zlrpmpahnM+tpkYGFtJC
joXsuHiBcVp88DHEHMA7
yN8i9ppoZYHSSaqqk6NZnQ==
4UFEMfyKhSB4UovzjdabqolwhFtMH1M=
d3RiRcXCeR8wlgjEHMA7
eMUS8PSBPCe2rPg=
LCsR0X328UuSAmlf
/keifSXopayqjLt1EWQ=
x8Hdn0pOACh11lPPYXo=
NXkuHKtxYYAXG3hA
d5dE59banPxMmA==
0vJUL/UPu1HN/m7cbA==
cG3LiYu7/OkmhQ==
kcFYNbltO4XkzzLEHMA7
c3now24l3wQX9EW8E1YfgA==
6kE4FbVNNTmvwBldAWY=
KzTXxYN5AlmUlfA=
pN03EpAPvdoG3td9HG4=
HFxFE8xVAzYdmOSoxIRGsGfPrq2RWw==
QKMj+KSybRYojwTEHMA7
PYRSDRNTUAol
OU/wwlhkGLrLFHx6Y4tNmQ==
5SOc+gRCtzY4
Wpm/fyDn4/3+CVe5E1YfgA==
dYOdeSmnq2BbpQLEHMA7
5vBBzXlHCp/yEEZBRKetUjQ52IU0yTJk
bbmih0CBPMgoE2DLXmVpeGo=
4S2wkRvbxeLo00C8WmVpeGo=
uECyFReWXAol
jNu+mzKEhkrN/m7cbA==
4gAT76Z35fIJDFm5E1YfgA==
qADJh1HW2aS+D2Q1E1YfgA==
dcvSv2utZ/AJgMdevpFTnQ==
JTfVqz447pqn6T42UST9jGfPrq2RWw==
iY+7qTKHfAfwUMO7yWj3my2YHA==
WmeZXSgwNX67nd5C2U4GFtJC
7P/CoUpIP1lWSI3ch/yAAIOwONni
5+eJT9fhjh9hv9+SMWw=
Y3Z/PQTQl7DjzUC9SmVpeGo=
EiBDCpcTF6v40SzEHMA7
P2sC6LDSgQA7VIpX
5eWOfxDRj6Pp4VDbY2VpeGo=
dsEE1oKWIEAv
Ua2MVQydVIHU0DXEHMA7
hNkQ540Z0sNCG25K
b4tOMMbN0uY5lt+32djuHPtxAw==
teuvevj8CyJw4EUsE1YfgA==
tNsZ75ZlU1WpFoCBm1RaVsvskzc=
aLsI8IQZ0uL0yNd9HG4=
RUPKsWJ0gHa5LI2Nj0P5cFDOnsZ1AC62uw==
P5f+1WAqKEOSIzw7ZA==
Mdxb0fR4Aa8Zdu8=
carolinerosenstein.com

Signatures

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

Blocklisted process makes network request 2 IoCs

flow	pid	Process
7	992	rundll32.exe
8	992	rundll32.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2292972927-2705560509-2768824231-1000\Control Panel\International\Geo\Nation	HiU4VL9BMkwVhsG.exe

Loads dropped DLL 1 IoCs

pid	Process
992	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 1968 set thread context of 816	1968	HiU4VL9BMkwVhsG.exe	28
PID 816 set thread context of 1296	816	HiU4VL9BMkwVhsG.exe	14
PID 992 set thread context of 1296	992	rundll32.exe	14

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-1-5-21-2292972927-2705560509-2768824231-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	rundll32.exe

Suspicious behavior: EnumeratesProcesses 15 IoCs

pid	Process
1968	HiU4VL9BMkwVhsG.exe
816	HiU4VL9BMkwVhsG.exe
816	HiU4VL9BMkwVhsG.exe
816	HiU4VL9BMkwVhsG.exe
816	HiU4VL9BMkwVhsG.exe
992	rundll32.exe
992	rundll32.exe
992	rundll32.exe
992	rundll32.exe
992	rundll32.exe
992	rundll32.exe
992	rundll32.exe
992	rundll32.exe
992	rundll32.exe
992	rundll32.exe

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
816	HiU4VL9BMkwVhsG.exe
816	HiU4VL9BMkwVhsG.exe
816	HiU4VL9BMkwVhsG.exe
992	rundll32.exe
992	rundll32.exe
992	rundll32.exe
992	rundll32.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	1968	HiU4VL9BMkwVhsG.exe
Token: SeDebugPrivilege	816	HiU4VL9BMkwVhsG.exe
Token: SeDebugPrivilege	992	rundll32.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1296	Explorer.EXE
1296	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1296	Explorer.EXE
1296	Explorer.EXE

Suspicious use of WriteProcessMemory 23 IoCs

description	pid	Process	procid_target
PID 1968 wrote to memory of 1420	1968	HiU4VL9BMkwVhsG.exe	27
PID 1968 wrote to memory of 1420	1968	HiU4VL9BMkwVhsG.exe	27
PID 1968 wrote to memory of 1420	1968	HiU4VL9BMkwVhsG.exe	27
PID 1968 wrote to memory of 1420	1968	HiU4VL9BMkwVhsG.exe	27
PID 1968 wrote to memory of 816	1968	HiU4VL9BMkwVhsG.exe	28
PID 1968 wrote to memory of 816	1968	HiU4VL9BMkwVhsG.exe	28
PID 1968 wrote to memory of 816	1968	HiU4VL9BMkwVhsG.exe	28
PID 1968 wrote to memory of 816	1968	HiU4VL9BMkwVhsG.exe	28
PID 1968 wrote to memory of 816	1968	HiU4VL9BMkwVhsG.exe	28
PID 1968 wrote to memory of 816	1968	HiU4VL9BMkwVhsG.exe	28
PID 1968 wrote to memory of 816	1968	HiU4VL9BMkwVhsG.exe	28
PID 1296 wrote to memory of 992	1296	Explorer.EXE	29
PID 1296 wrote to memory of 992	1296	Explorer.EXE	29
PID 1296 wrote to memory of 992	1296	Explorer.EXE	29
PID 1296 wrote to memory of 992	1296	Explorer.EXE	29
PID 1296 wrote to memory of 992	1296	Explorer.EXE	29
PID 1296 wrote to memory of 992	1296	Explorer.EXE	29
PID 1296 wrote to memory of 992	1296	Explorer.EXE	29
PID 992 wrote to memory of 384	992	rundll32.exe	32
PID 992 wrote to memory of 384	992	rundll32.exe	32
PID 992 wrote to memory of 384	992	rundll32.exe	32
PID 992 wrote to memory of 384	992	rundll32.exe	32
PID 992 wrote to memory of 384	992	rundll32.exe	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1296
- C:\Users\Admin\AppData\Local\Temp\HiU4VL9BMkwVhsG.exe
  "C:\Users\Admin\AppData\Local\Temp\HiU4VL9BMkwVhsG.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1968
- - C:\Users\Admin\AppData\Local\Temp\HiU4VL9BMkwVhsG.exe
    "C:\Users\Admin\AppData\Local\Temp\HiU4VL9BMkwVhsG.exe"
    3⤵
    PID:1420
- - C:\Users\Admin\AppData\Local\Temp\HiU4VL9BMkwVhsG.exe
    "C:\Users\Admin\AppData\Local\Temp\HiU4VL9BMkwVhsG.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:816
- 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:992
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:384

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

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

Command and Control

Exfiltration

Impact

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Downloads

sqlite3.dll

Path \Users\Admin\AppData\Local\Temp\sqlite3.dll
Size 837KB
SHA256 1b98c006231d38524e2278a474c49274fe42e0bb1a31bcfda02e6e32f559b777
MD5 e1b58e0aa1b377a1d0e940660ad1ace1
SHA1 5afc7291b26855b1252b26381ebc85ed3cca218f
SHA512 9ce778bcb586638662b090910c4ceab3b64e16dfaf905a7581c1d349fecdf186995b3cc0dc8c6fc6e9761ea2831d7b14ac1619c2bd5ebc6d18015842e5d94aa2
SSDEEP 24576:ATtmtnhKqK75YJ4+X8NLXBIXcgVMU//GV:Ashc84y8NLXBUjQ
MD5 SHA1 SHA512 SSDEEP

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memory/816-68-0x0000000000401000-0x000000000042F000-memory.dmp

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memory/816-67-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/816-71-0x0000000000070000-0x0000000000080000-memory.dmp

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memory/816-70-0x0000000000422000-0x0000000000424000-memory.dmp

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memory/816-69-0x0000000000A20000-0x0000000000D23000-memory.dmp

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memory/816-60-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/816-61-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/816-63-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/816-66-0x0000000000400000-0x000000000042F000-memory.dmp

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memory/992-77-0x0000000002100000-0x0000000002403000-memory.dmp

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memory/992-78-0x0000000001C60000-0x0000000001CEF000-memory.dmp

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memory/992-80-0x0000000000090000-0x00000000000BD000-memory.dmp

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memory/992-76-0x0000000000090000-0x00000000000BD000-memory.dmp

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memory/992-75-0x0000000000230000-0x000000000023E000-memory.dmp

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memory/1296-72-0x00000000068F0000-0x00000000069F3000-memory.dmp

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memory/1296-79-0x0000000006430000-0x00000000064FC000-memory.dmp

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memory/1296-81-0x0000000006430000-0x00000000064FC000-memory.dmp

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memory/1968-59-0x0000000004DC0000-0x0000000004E0A000-memory.dmp

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memory/1968-58-0x0000000005020000-0x00000000050C2000-memory.dmp

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memory/1968-54-0x0000000000920000-0x0000000000A1A000-memory.dmp

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memory/1968-57-0x0000000000300000-0x000000000030C000-memory.dmp

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memory/1968-56-0x00000000002F0000-0x0000000000304000-memory.dmp

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memory/1968-55-0x0000000075141000-0x0000000075143000-memory.dmp

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