formbook | 79df449dc86d423ea6b59361b7bc839efd8149bf49f138540327d9e94ec89733

General

Target

tmp.exe
Size

880KB
MD5

7a0e96f78e83a1d55e045972883b04d0
SHA1

33e82a9963397ebd4c786a8f62a5b464899f6929
SHA256

79df449dc86d423ea6b59361b7bc839efd8149bf49f138540327d9e94ec89733
SHA512

81e1d33bb133073f8a6349630693c11a44f63deb0b6cafef8e4d4eea58da9db6b981e3c6c5d4f42436c05ce5c0859faeea2ba6166774674000ad9183e71ab62c
SSDEEP

12288:bCRjG9rD4sbdehUG0CrkDPhaoh+s3dHzqm0wcas/:DD4KXhC6aq1qm

Score

10^/10

formbook s8gw rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

s8gw

Decoy

b/iFndOEL2rKvw==

HK7quAepCJH6CkNgpH2cDYx1

YEayMA+cR1WQ0Qw/lQ==

kPVNVkAC6pEPHVFQnzCxsA==

yLE1wrE7kf1KRGRm5a95qQ==

D6ktQZWoaOJGopmOlg==

98rmMok6y5e47YvCCMQNPaqM6qf+7PsEAQ==

7Po3fdN1NNtop0X5Ryv9PnUrSLQ=

+vk1DU92V465rf1+gFhdWMFoAsAY

AuhZ6jw45aHmPdzGVilx

/9ln8smKekiYzqePkA==

7+gsdtTlpqcSL0/GVilx

6pXLEOumjAfvK8Y=

inT5kfC0FBmcw/hw7NYua819

wb/qKZCjfrEiKFz9Vyn9chrZxA==

Pil1K4a6ruUXJ2fPD5qXo+2pNMn5VdCREA==

mxo3/mBm1hMSWd8=

8ltzwIsdiPpJXbK30JecDYx1

BmrK2y9G+VyimqzrK9YtmYY=

jPP9Q/IqWt3JQSZtvqI1jb9oAsAY

Signatures

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

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	tmp.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1088 set thread context of 936	1088	tmp.exe	27
PID 936 set thread context of 1276	936	tmp.exe	13
PID 936 set thread context of 1276	936	tmp.exe	13
PID 1164 set thread context of 1276	1164	chkdsk.exe	13

Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

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	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 18 IoCs

pid	Process
936	tmp.exe
936	tmp.exe
936	tmp.exe
936	tmp.exe
936	tmp.exe
1164	chkdsk.exe
1164	chkdsk.exe
1164	chkdsk.exe
1164	chkdsk.exe
1164	chkdsk.exe
1164	chkdsk.exe
1164	chkdsk.exe
1164	chkdsk.exe
1164	chkdsk.exe
1164	chkdsk.exe
1164	chkdsk.exe
1164	chkdsk.exe
1164	chkdsk.exe

Suspicious behavior: MapViewOfSection 8 IoCs

pid	Process
936	tmp.exe
936	tmp.exe
936	tmp.exe
936	tmp.exe
1164	chkdsk.exe
1164	chkdsk.exe
1164	chkdsk.exe
1164	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	936	tmp.exe
Token: SeDebugPrivilege	1164	chkdsk.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1276	Explorer.EXE
1276	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1276	Explorer.EXE
1276	Explorer.EXE

Suspicious use of WriteProcessMemory 16 IoCs

description	pid	Process	procid_target
PID 1088 wrote to memory of 936	1088	tmp.exe	27
PID 1088 wrote to memory of 936	1088	tmp.exe	27
PID 1088 wrote to memory of 936	1088	tmp.exe	27
PID 1088 wrote to memory of 936	1088	tmp.exe	27
PID 1088 wrote to memory of 936	1088	tmp.exe	27
PID 1088 wrote to memory of 936	1088	tmp.exe	27
PID 1088 wrote to memory of 936	1088	tmp.exe	27
PID 1276 wrote to memory of 1164	1276	Explorer.EXE	28
PID 1276 wrote to memory of 1164	1276	Explorer.EXE	28
PID 1276 wrote to memory of 1164	1276	Explorer.EXE	28
PID 1276 wrote to memory of 1164	1276	Explorer.EXE	28
PID 1164 wrote to memory of 1976	1164	chkdsk.exe	31
PID 1164 wrote to memory of 1976	1164	chkdsk.exe	31
PID 1164 wrote to memory of 1976	1164	chkdsk.exe	31
PID 1164 wrote to memory of 1976	1164	chkdsk.exe	31
PID 1164 wrote to memory of 1976	1164	chkdsk.exe	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:1276
- C:\Users\Admin\AppData\Local\Temp\tmp.exe
  "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious use of WriteProcessMemory
  PID:1088
- - C:\Users\Admin\AppData\Local\Temp\tmp.exe
    "C:\Users\Admin\AppData\Local\Temp\tmp.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:936
- C:\Windows\SysWOW64\chkdsk.exe
  "C:\Windows\SysWOW64\chkdsk.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Enumerates system info in registry
  - Modifies Internet Explorer settings
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1164
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:1976

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

2

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/936-64-0x000000000041FE40-mapping.dmp

Download
memory/936-65-0x0000000000950000-0x0000000000C53000-memory.dmp

Filesize
3.0MB

Download
memory/936-70-0x00000000001A0000-0x00000000001B0000-memory.dmp

Filesize
64KB

Download
memory/936-69-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/936-67-0x0000000000160000-0x0000000000170000-memory.dmp

Filesize
64KB

Download
memory/936-61-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/936-73-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/936-63-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/936-60-0x0000000000400000-0x000000000042B000-memory.dmp

Filesize
172KB

Download
memory/1088-55-0x0000000074C91000-0x0000000074C93000-memory.dmp

Filesize
8KB

Download
memory/1088-59-0x0000000000B90000-0x0000000000BC2000-memory.dmp

Filesize
200KB

Download
memory/1088-58-0x0000000005FD0000-0x000000000605C000-memory.dmp

Filesize
560KB

Download
memory/1088-54-0x0000000000EE0000-0x0000000000FC2000-memory.dmp

Filesize
904KB

Download
memory/1088-57-0x0000000000600000-0x000000000060C000-memory.dmp

Filesize
48KB

Download
memory/1088-56-0x0000000000650000-0x000000000066A000-memory.dmp

Filesize
104KB

Download
memory/1164-74-0x0000000000C70000-0x0000000000C77000-memory.dmp

Filesize
28KB

Download
memory/1164-72-0x0000000000000000-mapping.dmp

Download
memory/1164-75-0x0000000000080000-0x00000000000AB000-memory.dmp

Filesize
172KB

Download
memory/1164-76-0x0000000002210000-0x0000000002513000-memory.dmp

Filesize
3.0MB

Download
memory/1164-77-0x0000000000B10000-0x0000000000B9F000-memory.dmp

Filesize
572KB

Download
memory/1164-79-0x0000000000080000-0x00000000000AB000-memory.dmp

Filesize
172KB

Download
memory/1276-71-0x0000000006210000-0x000000000636E000-memory.dmp

Filesize
1.4MB

Download
memory/1276-68-0x0000000005FB0000-0x00000000060F7000-memory.dmp

Filesize
1.3MB

Download
memory/1276-78-0x0000000006560000-0x000000000667D000-memory.dmp

Filesize
1.1MB

Download
memory/1276-80-0x0000000006560000-0x000000000667D000-memory.dmp

Filesize
1.1MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads