formbook | 24cb35ea55c1ecbf1c90b517b9f721b9f86dfe77d87cb39b7524729319f95aa3

General

Target

faktura,pdf.exe
Size

484KB
MD5

0c2779d8b1c98fee81f0e5f0f47b1076
SHA1

5dc8b937c91d42bfb4870970a85d6b415e208aba
SHA256

02928b2d3818c82f6b0cd4d1c69a5717b36d56a6ede9e8b6e6dfad55d9165406
SHA512

4a60973ec7ea718fb5d562d030876987fb5006c9a1f0a2241dc7aca1800c0c386aed3be4e651f7aa158ccf4d133ee7e8f0de4f608f0f1a7577ed9e4ca9fcbc3b
SSDEEP

6144:eNeZkjUUpNggUZvLl6SpvAkfcxMLiEVCN4WQBWkNtU:eNAi5UFLl6SpvAkfcx4iEVRWQrNtU

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-1-5-21-312935884-697965778-3955649944-1000\Control Panel\International\Geo\Nation	lejdjsong.exe

Executes dropped EXE 1 IoCs

pid	Process
2536	lejdjsong.exe

Loads dropped DLL 3 IoCs

pid	Process
2400	faktura,pdf.exe
2536	lejdjsong.exe
2112	lejdjsong.exe

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 2536 set thread context of 2112	2536	lejdjsong.exe	31
PID 2112 set thread context of 1156	2112	lejdjsong.exe	20
PID 2460 set thread context of 1156	2460	wscript.exe	20

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).

System Information Discovery
T1082

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	lejdjsong.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	wscript.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	faktura,pdf.exe

Suspicious behavior: EnumeratesProcesses 33 IoCs

pid	Process
2112	lejdjsong.exe
2112	lejdjsong.exe
2112	lejdjsong.exe
2112	lejdjsong.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe
2460	wscript.exe

Suspicious behavior: MapViewOfSection 5 IoCs

pid	Process
2112	lejdjsong.exe
2112	lejdjsong.exe
2112	lejdjsong.exe
2460	wscript.exe
2460	wscript.exe

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	2112	lejdjsong.exe
Token: SeDebugPrivilege	2460	wscript.exe

Suspicious use of WriteProcessMemory 13 IoCs

description	pid	Process	procid_target
PID 2400 wrote to memory of 2536	2400	faktura,pdf.exe	30
PID 2400 wrote to memory of 2536	2400	faktura,pdf.exe	30
PID 2400 wrote to memory of 2536	2400	faktura,pdf.exe	30
PID 2400 wrote to memory of 2536	2400	faktura,pdf.exe	30
PID 2536 wrote to memory of 2112	2536	lejdjsong.exe	31
PID 2536 wrote to memory of 2112	2536	lejdjsong.exe	31
PID 2536 wrote to memory of 2112	2536	lejdjsong.exe	31
PID 2536 wrote to memory of 2112	2536	lejdjsong.exe	31
PID 2536 wrote to memory of 2112	2536	lejdjsong.exe	31
PID 1156 wrote to memory of 2460	1156	Explorer.EXE	32
PID 1156 wrote to memory of 2460	1156	Explorer.EXE	32
PID 1156 wrote to memory of 2460	1156	Explorer.EXE	32
PID 1156 wrote to memory of 2460	1156	Explorer.EXE	32

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:1156
- C:\Users\Admin\AppData\Local\Temp\faktura,pdf.exe
  "C:\Users\Admin\AppData\Local\Temp\faktura,pdf.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2400
- - C:\Users\Admin\AppData\Local\Temp\lejdjsong.exe
    "C:\Users\Admin\AppData\Local\Temp\lejdjsong.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious use of WriteProcessMemory
    PID:2536
  - - C:\Users\Admin\AppData\Local\Temp\lejdjsong.exe
      "C:\Users\Admin\AppData\Local\Temp\lejdjsong.exe"
      4⤵
      Checks computer location settings
      Loads dropped DLL
      Suspicious use of SetThreadContext
      Suspicious behavior: EnumeratesProcesses
      Suspicious behavior: MapViewOfSection
      Suspicious use of AdjustPrivilegeToken
      PID:2112
- C:\Windows\SysWOW64\wscript.exe
  "C:\Windows\SysWOW64\wscript.exe"
  2⤵
  - Suspicious use of SetThreadContext
  - System Location Discovery: System Language Discovery
  - Suspicious behavior: EnumeratesProcesses
  - Suspicious behavior: MapViewOfSection
  - Suspicious use of AdjustPrivilegeToken
  PID:2460

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

2

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

C:\Users\Admin\AppData\Local\Temp\pkzbr.e

Filesize
185KB

MD5
591d6e5750339bb3848fd5abc97311f0

SHA1
d688280ea879a1a309f72fede33f6695ec5ed105

SHA256
b778488ba471b2edfc808c5e4d55e4e0221d7ca23100c6cf563177db8f9b5fc8

SHA512
81dc6568ea3b278aa320f04b651b2b9b100e891eb8ecca21c6685031865ff6a3a0129c2a28acc5f7ddc2997db4db12ead12bcca89a786f9c402e799a4eea3ae6

Download Submit
C:\Users\Admin\AppData\Local\Temp\vnbnucchqkc.gr

Filesize
4KB

MD5
d2a837454edcdf54d22d808482386ba7

SHA1
f8483cba5522ead7d1b557914ff3c411fc4df541

SHA256
2ba5c60045c398ebd1e59e2225250b8f09536e4a4ba4eec26186a68fb9574a0a

SHA512
4078b008e9a7dce2e4938936bef3bcb3262d29f1ffbc45fed75093cb742b6ed7c2de0c98f83d3db0289d6b9a02a28a115b44aeb28a258d95e18236b230cf17d3

Download Submit
\Users\Admin\AppData\Local\Temp\lejdjsong.exe

Filesize
73KB

MD5
86a148c54d7a5ee49386393a7bd64e75

SHA1
3bcd7adf68d28514c0d362964bf4ac1e067bda6f

SHA256
7cc777f463f00d5389c55fe6cc7904b427efd52ab0b2e932ddd1210d6c0eedb6

SHA512
214f5530b2adc519243cd0c10af2987275988b45e1050f147391ece49c3ab2ae3ec4dff4f79598a6f9061ae4d70fbc78334d4a1ae2e863ab92628e0b4beb00fb

Download Submit
memory/1156-23-0x00000000050A0000-0x0000000005216000-memory.dmp

Filesize
1.5MB

Download
memory/1156-17-0x00000000050A0000-0x0000000005216000-memory.dmp

Filesize
1.5MB

Download
memory/2112-16-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2112-15-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2112-14-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2112-19-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2460-21-0x0000000000AC0000-0x0000000000AE6000-memory.dmp

Filesize
152KB

Download
memory/2460-20-0x0000000000AC0000-0x0000000000AE6000-memory.dmp

Filesize
152KB

Download
memory/2460-22-0x0000000000070000-0x000000000009D000-memory.dmp

Filesize
180KB

Download
memory/2536-8-0x00000000000F0000-0x00000000000F2000-memory.dmp

Filesize
8KB

Download

Analysis

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