formbook | 24cb35ea55c1ecbf1c90b517b9f721b9f86dfe77d87cb39b7524729319f95aa3

General

Target

lejdjsong.exe
Size

73KB
MD5

86a148c54d7a5ee49386393a7bd64e75
SHA1

3bcd7adf68d28514c0d362964bf4ac1e067bda6f
SHA256

7cc777f463f00d5389c55fe6cc7904b427efd52ab0b2e932ddd1210d6c0eedb6
SHA512

214f5530b2adc519243cd0c10af2987275988b45e1050f147391ece49c3ab2ae3ec4dff4f79598a6f9061ae4d70fbc78334d4a1ae2e863ab92628e0b4beb00fb
SSDEEP

1536:tBsMIL1gs031sHpiCq9lnLo4LR6ruhb8muP/CAzaJG5dJXBsWScd+u5Ngih:YMA2s031sH81R6ruhbfa/XJH+aNgih

Score

10^/10

formbook nob2 discovery rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

nob2

Decoy

en+O8QOx9zDZZo6B

4OtleJKQETLZZo6B

xGU74u2nB/TAvy6QCqHWGzhs5rjgJKkH8Q==

Hq3a8RPSF4BJjsCnvBuPXSngiQ==

Ca1w6R7ZEzrZZo6B

V3N7ImFtXIccbqg=

jkdEFrI4Bjj/

rGXE4vP2e7leaO0+Mw==

mFACnMuCTkL+R3Fh+5rYDQ==

k1R/bHxIDwfQHVtMUnukJu3OiA==

Goa71OKQKE9ALQ==

TUVlDTovqKZqfHiwJHaK

VBnCLD8NiCkMIw==

fIbQ7Joi+SgIi/y6E7P5RoPjihFL

UTcvz+rs7OfK+DARp/kwBpv6Jq7TVgs=

rF084AkQIlQmdZwZOg==

6eJWgNCEuf3EAbCxkXiM

JcyQCi86x+3MC8IYjvN0uyjYjg==

S+8thMWBzyTZZo6B

5dDUXJSODfnS/DkyX8Nobh0=

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Formbook family
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-1-5-21-2039016743-699959520-214465309-1000\Control Panel\International\Geo\Nation	lejdjsong.exe

Suspicious use of SetThreadContext 4 IoCs

description	pid	Process	procid_target
PID 2744 set thread context of 2760	2744	lejdjsong.exe	30
PID 2760 set thread context of 1188	2760	lejdjsong.exe	21
PID 2760 set thread context of 1188	2760	lejdjsong.exe	21
PID 2940 set thread context of 1188	2940	wlanext.exe	21

System Location Discovery: System Language Discovery 1 TTPs 2 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	lejdjsong.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wlanext.exe

Suspicious behavior: EnumeratesProcesses 33 IoCs

pid	Process
2760	lejdjsong.exe
2760	lejdjsong.exe
2760	lejdjsong.exe
2760	lejdjsong.exe
2760	lejdjsong.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe
2940	wlanext.exe

Suspicious behavior: MapViewOfSection 6 IoCs

pid	Process
2760	lejdjsong.exe
2760	lejdjsong.exe
2760	lejdjsong.exe
2760	lejdjsong.exe
2940	wlanext.exe
2940	wlanext.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2760	lejdjsong.exe
Token: SeDebugPrivilege	2940	wlanext.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 2744 wrote to memory of 2760	2744	lejdjsong.exe	30
PID 2744 wrote to memory of 2760	2744	lejdjsong.exe	30
PID 2744 wrote to memory of 2760	2744	lejdjsong.exe	30
PID 2744 wrote to memory of 2760	2744	lejdjsong.exe	30
PID 2744 wrote to memory of 2760	2744	lejdjsong.exe	30
PID 1188 wrote to memory of 2940	1188	Explorer.EXE	31
PID 1188 wrote to memory of 2940	1188	Explorer.EXE	31
PID 1188 wrote to memory of 2940	1188	Explorer.EXE	31
PID 1188 wrote to memory of 2940	1188	Explorer.EXE	31

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1188
- C:\Users\Admin\AppData\Local\Temp\lejdjsong.exe
  "C:\Users\Admin\AppData\Local\Temp\lejdjsong.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2744
- - C:\Users\Admin\AppData\Local\Temp\lejdjsong.exe
    "C:\Users\Admin\AppData\Local\Temp\lejdjsong.exe"
    3⤵
    - Checks computer location settings
    - Suspicious use of SetThreadContext
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious behavior: MapViewOfSection
    - Suspicious use of AdjustPrivilegeToken
    PID:2760
- C:\Windows\SysWOW64\wlanext.exe
  "C:\Windows\SysWOW64\wlanext.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:2940

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

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/1188-9-0x0000000004F80000-0x0000000005068000-memory.dmp

Filesize
928KB

Download
memory/1188-17-0x0000000005070000-0x0000000005146000-memory.dmp

Filesize
856KB

Download
memory/1188-10-0x0000000005070000-0x0000000005146000-memory.dmp

Filesize
856KB

Download
memory/1188-5-0x0000000004F80000-0x0000000005068000-memory.dmp

Filesize
928KB

Download
memory/2744-0-0x00000000000F0000-0x00000000000F2000-memory.dmp

Filesize
8KB

Download
memory/2760-4-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2760-8-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2760-7-0x0000000000423000-0x0000000000424000-memory.dmp

Filesize
4KB

Download
memory/2760-6-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2760-3-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2760-14-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2760-2-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2940-12-0x0000000000540000-0x0000000000556000-memory.dmp

Filesize
88KB

Download
memory/2940-15-0x0000000000540000-0x0000000000556000-memory.dmp

Filesize
88KB

Download
memory/2940-16-0x0000000000080000-0x00000000000AD000-memory.dmp

Filesize
180KB

Download

Analysis

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