formbook | f4a0e79e842eb7a46dc6e5ba3f5cc71c2ea6d600c86eca1fedf63cff8d410fd7

General

Target

TBbnIeshOChdGjx.exe
Size

852KB
MD5

43413e0be3ce71e1f1513985c18fa0f9
SHA1

3d3584af7e0de77693261887e3165913f2a659ae
SHA256

f4a0e79e842eb7a46dc6e5ba3f5cc71c2ea6d600c86eca1fedf63cff8d410fd7
SHA512

0e512bb897950090f01cfca1c5fc245dafed7a2c530d511bfa38edb2788417389e2e5cea0020fb5112aebb75a66d9159ce3ad5e348ad20332fce8fad16e6df64
SSDEEP

24576:T1dH+AG6F0xMi4IfLJUPYd56HbMH1jr/wBf2tqG4yPaE:TPHrbWi9LwYHbMhC22

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=

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-1-5-21-3385717845-2518323428-350143044-1000\Control Panel\International\Geo\Nation	TBbnIeshOChdGjx.exe

Loads dropped DLL 1 IoCs

pid	Process
1908	svchost.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2008 set thread context of 564	2008	TBbnIeshOChdGjx.exe	29
PID 564 set thread context of 1248	564	TBbnIeshOChdGjx.exe	16
PID 1908 set thread context of 1248	1908	svchost.exe	16

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

description	ioc	Process
Key created	\Registry\User\S-1-5-21-3385717845-2518323428-350143044-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	svchost.exe

Suspicious behavior: EnumeratesProcesses 21 IoCs

pid	Process
2008	TBbnIeshOChdGjx.exe
564	TBbnIeshOChdGjx.exe
564	TBbnIeshOChdGjx.exe
564	TBbnIeshOChdGjx.exe
564	TBbnIeshOChdGjx.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1248	Explorer.EXE

Suspicious behavior: MapViewOfSection 7 IoCs

pid	Process
564	TBbnIeshOChdGjx.exe
564	TBbnIeshOChdGjx.exe
564	TBbnIeshOChdGjx.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe
1908	svchost.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2008	TBbnIeshOChdGjx.exe
Token: SeDebugPrivilege	564	TBbnIeshOChdGjx.exe
Token: SeDebugPrivilege	1908	svchost.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1248	Explorer.EXE
1248	Explorer.EXE

Suspicious use of SendNotifyMessage 2 IoCs

pid	Process
1248	Explorer.EXE
1248	Explorer.EXE

Suspicious use of UnmapMainImage 1 IoCs

pid	Process
1248	Explorer.EXE

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 2008 wrote to memory of 1636	2008	TBbnIeshOChdGjx.exe	28
PID 2008 wrote to memory of 1636	2008	TBbnIeshOChdGjx.exe	28
PID 2008 wrote to memory of 1636	2008	TBbnIeshOChdGjx.exe	28
PID 2008 wrote to memory of 1636	2008	TBbnIeshOChdGjx.exe	28
PID 2008 wrote to memory of 564	2008	TBbnIeshOChdGjx.exe	29
PID 2008 wrote to memory of 564	2008	TBbnIeshOChdGjx.exe	29
PID 2008 wrote to memory of 564	2008	TBbnIeshOChdGjx.exe	29
PID 2008 wrote to memory of 564	2008	TBbnIeshOChdGjx.exe	29
PID 2008 wrote to memory of 564	2008	TBbnIeshOChdGjx.exe	29
PID 2008 wrote to memory of 564	2008	TBbnIeshOChdGjx.exe	29
PID 2008 wrote to memory of 564	2008	TBbnIeshOChdGjx.exe	29
PID 1248 wrote to memory of 1908	1248	Explorer.EXE	30
PID 1248 wrote to memory of 1908	1248	Explorer.EXE	30
PID 1248 wrote to memory of 1908	1248	Explorer.EXE	30
PID 1248 wrote to memory of 1908	1248	Explorer.EXE	30
PID 1908 wrote to memory of 2016	1908	svchost.exe	33
PID 1908 wrote to memory of 2016	1908	svchost.exe	33
PID 1908 wrote to memory of 2016	1908	svchost.exe	33
PID 1908 wrote to memory of 2016	1908	svchost.exe	33
PID 1908 wrote to memory of 2016	1908	svchost.exe	33

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:1248
- C:\Users\Admin\AppData\Local\Temp\TBbnIeshOChdGjx.exe
  "C:\Users\Admin\AppData\Local\Temp\TBbnIeshOChdGjx.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:2008
- - C:\Users\Admin\AppData\Local\Temp\TBbnIeshOChdGjx.exe
    "C:\Users\Admin\AppData\Local\Temp\TBbnIeshOChdGjx.exe"
    3⤵
    PID:1636
- - C:\Users\Admin\AppData\Local\Temp\TBbnIeshOChdGjx.exe
    "C:\Users\Admin\AppData\Local\Temp\TBbnIeshOChdGjx.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:564
- C:\Windows\SysWOW64\svchost.exe
  "C:\Windows\SysWOW64\svchost.exe"
  2⤵
  - 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:1908
- - C:\Program Files\Mozilla Firefox\Firefox.exe
    "C:\Program Files\Mozilla Firefox\Firefox.exe"
    3⤵
    PID:2016

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

\Users\Admin\AppData\Local\Temp\sqlite3.dll

Filesize
810KB

MD5
c6ec991471d42128268ea10236d9cdb8

SHA1
d569350d02db6a118136220da8de40a9973084f1

SHA256
1b755cc3093dd45a0df857854aedfeb3c8f3622cff5bc491f2d492ebfa3ef8e0

SHA512
a67ed46547b9270c8a5a7a947b375cb6baf3211072f90170aae2bb6ce9c4fe9d7be3e9d782420dcfdbc19a1f232b3be561ca503b80e8dc3e036a62c54cad5b57

Download Submit
memory/564-68-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/564-67-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/564-70-0x0000000000422000-0x0000000000424000-memory.dmp

Filesize
8KB

Download
memory/564-69-0x00000000009E0000-0x0000000000CE3000-memory.dmp

Filesize
3.0MB

Download
memory/564-71-0x0000000000080000-0x0000000000090000-memory.dmp

Filesize
64KB

Download
memory/564-60-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/564-61-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/564-63-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/564-66-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/1248-78-0x0000000004900000-0x00000000049B6000-memory.dmp

Filesize
728KB

Download
memory/1248-72-0x0000000007350000-0x0000000007472000-memory.dmp

Filesize
1.1MB

Download
memory/1248-81-0x0000000004900000-0x00000000049B6000-memory.dmp

Filesize
728KB

Download
memory/1908-77-0x00000000006C0000-0x000000000074F000-memory.dmp

Filesize
572KB

Download
memory/1908-74-0x00000000007D0000-0x00000000007D8000-memory.dmp

Filesize
32KB

Download
memory/1908-75-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/1908-76-0x0000000000970000-0x0000000000C73000-memory.dmp

Filesize
3.0MB

Download
memory/1908-79-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download
memory/2008-58-0x0000000005320000-0x0000000005390000-memory.dmp

Filesize
448KB

Download
memory/2008-59-0x0000000000C20000-0x0000000000C54000-memory.dmp

Filesize
208KB

Download
memory/2008-54-0x00000000013D0000-0x00000000014AC000-memory.dmp

Filesize
880KB

Download
memory/2008-57-0x00000000004E0000-0x00000000004EA000-memory.dmp

Filesize
40KB

Download
memory/2008-56-0x00000000003A0000-0x00000000003B4000-memory.dmp

Filesize
80KB

Download
memory/2008-55-0x0000000074FD1000-0x0000000074FD3000-memory.dmp

Filesize
8KB

Download

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