formbook | 8ae9f962144ba9c83e0151053373871c5383e478b7bbe51df08124e9d1881f84

General

Target

USdoVn56lXoOULq.exe
Size

720KB
MD5

496178f82a5a471f55cfec67492c5c5c
SHA1

47f3c8ab59fb3e7fcf3a8c1b4cfd22150305f5fd
SHA256

0308ff4d9e1f733b474d2fa01c3a7cdb29129450188357602cd224c89927867c
SHA512

68ec33a0728560f05f78f6a436947457617bed61e6dbdd78516e14bda1b10f5b38120c4d7a0c4a5e215fd647b46db3881568c2b41ff87af86e7e4c8b8993ed40
SSDEEP

12288:1lDLIXPod2iNXMxDIKR9KM8DKH+4aaufLCIji4xqzLee6O639oo3F5/W+:1Dd1yUMfeUufLCIGTLJC3io3F93

Score

10^/10

formbook g25e discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Version

4.1

Campaign

g25e

Decoy

2491254125.xyz

hookd.gay

uxmelange.com

startupvision3.com

evanwoosley-reed.com

uspalupdser.info

lx0599.com

grupoiaez.com

londonpapershop.com

cremas.store

risespec.com

olivierverdoyant.com

creatednow.com

epicureanhometreats.com

iqijp.com

vcraftboutique.com

furnaristudios.com

dealsgolf.com

djwoojs.com

boatslave.com

Signatures

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

Formbook payload 4 IoCs

rat

resource	yara_rule
behavioral2/memory/4424-13-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4424-18-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/4424-22-0x0000000000400000-0x000000000042F000-memory.dmp	formbook
behavioral2/memory/3892-28-0x00000000001A0000-0x00000000001CF000-memory.dmp	formbook

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 1248 set thread context of 4424	1248	USdoVn56lXoOULq.exe	91
PID 4424 set thread context of 3440	4424	USdoVn56lXoOULq.exe	56
PID 4424 set thread context of 3440	4424	USdoVn56lXoOULq.exe	56
PID 3892 set thread context of 3440	3892	cmstp.exe	56

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	USdoVn56lXoOULq.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmstp.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious behavior: EnumeratesProcesses 44 IoCs

pid	Process
4424	USdoVn56lXoOULq.exe
4424	USdoVn56lXoOULq.exe
4424	USdoVn56lXoOULq.exe
4424	USdoVn56lXoOULq.exe
4424	USdoVn56lXoOULq.exe
4424	USdoVn56lXoOULq.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe
3892	cmstp.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
4424	USdoVn56lXoOULq.exe
4424	USdoVn56lXoOULq.exe
4424	USdoVn56lXoOULq.exe
4424	USdoVn56lXoOULq.exe
3892	cmstp.exe
3892	cmstp.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	4424	USdoVn56lXoOULq.exe
Token: SeDebugPrivilege	3892	cmstp.exe

Suspicious use of WriteProcessMemory 12 IoCs

description	pid	Process	procid_target
PID 1248 wrote to memory of 4424	1248	USdoVn56lXoOULq.exe	91
PID 1248 wrote to memory of 4424	1248	USdoVn56lXoOULq.exe	91
PID 1248 wrote to memory of 4424	1248	USdoVn56lXoOULq.exe	91
PID 1248 wrote to memory of 4424	1248	USdoVn56lXoOULq.exe	91
PID 1248 wrote to memory of 4424	1248	USdoVn56lXoOULq.exe	91
PID 1248 wrote to memory of 4424	1248	USdoVn56lXoOULq.exe	91
PID 3440 wrote to memory of 3892	3440	Explorer.EXE	92
PID 3440 wrote to memory of 3892	3440	Explorer.EXE	92
PID 3440 wrote to memory of 3892	3440	Explorer.EXE	92
PID 3892 wrote to memory of 8	3892	cmstp.exe	93
PID 3892 wrote to memory of 8	3892	cmstp.exe	93
PID 3892 wrote to memory of 8	3892	cmstp.exe	93

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:3440
- C:\Users\Admin\AppData\Local\Temp\USdoVn56lXoOULq.exe
  "C:\Users\Admin\AppData\Local\Temp\USdoVn56lXoOULq.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:1248
- - C:\Users\Admin\AppData\Local\Temp\USdoVn56lXoOULq.exe
    "C:\Users\Admin\AppData\Local\Temp\USdoVn56lXoOULq.exe"
    3⤵
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:4424
- C:\Windows\SysWOW64\cmstp.exe
  "C:\Windows\SysWOW64\cmstp.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:3892
- - C:\Windows\SysWOW64\cmd.exe
    /c del "C:\Users\Admin\AppData\Local\Temp\USdoVn56lXoOULq.exe"
    3⤵
    - System Location Discovery: System Language Discovery
    PID:8

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

memory/1248-15-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/1248-2-0x0000000005260000-0x0000000005804000-memory.dmp

Filesize
5.6MB

Download
memory/1248-0-0x000000007484E000-0x000000007484F000-memory.dmp

Filesize
4KB

Download
memory/1248-3-0x0000000004CB0000-0x0000000004D42000-memory.dmp

Filesize
584KB

Download
memory/1248-4-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/1248-5-0x0000000004C40000-0x0000000004C4A000-memory.dmp

Filesize
40KB

Download
memory/1248-6-0x0000000004C80000-0x0000000004C98000-memory.dmp

Filesize
96KB

Download
memory/1248-7-0x000000007484E000-0x000000007484F000-memory.dmp

Filesize
4KB

Download
memory/1248-8-0x0000000074840000-0x0000000074FF0000-memory.dmp

Filesize
7.7MB

Download
memory/1248-9-0x0000000004C30000-0x0000000004C3C000-memory.dmp

Filesize
48KB

Download
memory/1248-10-0x0000000005B80000-0x0000000005BFC000-memory.dmp

Filesize
496KB

Download
memory/1248-11-0x0000000005CA0000-0x0000000005D3C000-memory.dmp

Filesize
624KB

Download
memory/1248-12-0x0000000005C00000-0x0000000005C42000-memory.dmp

Filesize
264KB

Download
memory/1248-1-0x00000000001A0000-0x000000000025A000-memory.dmp

Filesize
744KB

Download
memory/3440-29-0x0000000002940000-0x0000000002A17000-memory.dmp

Filesize
860KB

Download
memory/3440-20-0x0000000008510000-0x0000000008698000-memory.dmp

Filesize
1.5MB

Download
memory/3440-34-0x0000000006E00000-0x0000000006EFB000-memory.dmp

Filesize
1004KB

Download
memory/3440-25-0x0000000008510000-0x0000000008698000-memory.dmp

Filesize
1.5MB

Download
memory/3440-32-0x0000000006E00000-0x0000000006EFB000-memory.dmp

Filesize
1004KB

Download
memory/3440-24-0x0000000002940000-0x0000000002A17000-memory.dmp

Filesize
860KB

Download
memory/3440-35-0x0000000006E00000-0x0000000006EFB000-memory.dmp

Filesize
1004KB

Download
memory/3892-26-0x0000000000180000-0x0000000000196000-memory.dmp

Filesize
88KB

Download
memory/3892-27-0x0000000000180000-0x0000000000196000-memory.dmp

Filesize
88KB

Download
memory/3892-28-0x00000000001A0000-0x00000000001CF000-memory.dmp

Filesize
188KB

Download
memory/4424-23-0x0000000000E80000-0x0000000000E95000-memory.dmp

Filesize
84KB

Download
memory/4424-13-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4424-22-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4424-18-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/4424-19-0x0000000000E10000-0x0000000000E25000-memory.dmp

Filesize
84KB

Download
memory/4424-16-0x0000000000EE0000-0x000000000122A000-memory.dmp

Filesize
3.3MB

Download

Analysis

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