formbook | bc07f5f2b53ecfe5def046099a57fb15658babfc18988d7b692c059fab32c249

General

Target

7.exe
Size

217KB
MD5

3347779841d3da795c21302943eb3336
SHA1

c06baa6711abdca45ef214fb071321de147a5b3f
SHA256

bc07f5f2b53ecfe5def046099a57fb15658babfc18988d7b692c059fab32c249
SHA512

6b9a358a6a2f3e1ed3811fafc0f730e47364cc6fd4fd77d139a72292e80e1985d0e17519ce24c6607e95c58651a2cefcc1d57c8b6ca49cb03b1f4ffb7ec896c4
SSDEEP

6144:LEubXAxE9UJmPspuZMTexvFL6is5O+9R:LE8wxZIPlOTeFLHaP9

Score

10^/10

formbook ermr persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

ermr

Decoy

ErOK6LFCgNIAlQmH54oaYOL/CN29Z78=

qNSdDhu/PT/1fgafDagiCSZH1SY=

wLpPOAkYS8EABl3pHGc4hNT/Q1sHBrU=

jSxRvptHkeTGl7PT0SEmaZmjqzanuA==

b91oL+2wCcpyhnd6yvF6Pg==

mr81yp1/qqZX

hy7Xsz/PU/LWHMcGL4UYJx9n3A==

KlwrHt1gouPaXaWhoQ==

ng8M320IRJL9Ptw=

8GQbOXuaWxvKnNM=

XndOL7E5sNpVUNty4d/a

rryPBBC8PybYb+2h2MF3FHGL

kEoeyERSVCYO0g==

5/P+SBDby5hO

1fYXc30/h9W7iO17

34X+YKR+wRFE

8ir/X2MlVByh5lQ1ow8=

u9ikm2UMZ7J7hpCYow==

FLI+c3clp1BNDjVAfvC2Dnw=

t21Erq8/r09wAzAJTAH3Ng==

Signatures

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

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	msiexec.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\DZNPOR5H5RZ = "C:\\Program Files (x86)\\Oklc\\vxrl0xx.exe"	msiexec.exe

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

Processes:

7.exe

description ioc process

Key value queried \REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation 7.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2891029575-1462575-1165213807-1000\Control Panel\International\Geo\Nation	7.exe

Suspicious use of SetThreadContext 3 IoCs

Processes:

7.exe7.exemsiexec.exe

description	pid	process	target process
PID 3108 set thread context of 4340	3108	7.exe	7.exe
PID 4340 set thread context of 3048	4340	7.exe	Explorer.EXE
PID 5112 set thread context of 3048	5112	msiexec.exe	Explorer.EXE

Drops file in Program Files directory 1 IoCs

Processes:

msiexec.exe

description ioc process

File opened for modification C:\Program Files (x86)\Oklc\vxrl0xx.exe msiexec.exe

description	ioc	process
File opened for modification	C:\Program Files (x86)\Oklc\vxrl0xx.exe	msiexec.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

msiexec.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2891029575-1462575-1165213807-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	msiexec.exe

Suspicious behavior: EnumeratesProcesses 50 IoCs

Processes:

7.exemsiexec.exe

pid	process
4340	7.exe
4340	7.exe
4340	7.exe
4340	7.exe
4340	7.exe
4340	7.exe
4340	7.exe
4340	7.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe
5112	msiexec.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

3048 Explorer.EXE
Suspicious behavior: MapViewOfSection 7 IoCs

Processes:

7.exemsiexec.exe

pid process

4340 7.exe
4340 7.exe
4340 7.exe
5112 msiexec.exe
5112 msiexec.exe
5112 msiexec.exe
5112 msiexec.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

7.exemsiexec.exe

description pid process

Token: SeDebugPrivilege 4340 7.exe
Token: SeDebugPrivilege 5112 msiexec.exe

pid	process
3048	Explorer.EXE

description	pid	process
Token: SeDebugPrivilege	4340	7.exe
Token: SeDebugPrivilege	5112	msiexec.exe

Suspicious use of WriteProcessMemory 15 IoCs

Processes:

7.exeExplorer.EXEmsiexec.exe

description	pid	process	target process
PID 3108 wrote to memory of 4340	3108	7.exe	7.exe
PID 3108 wrote to memory of 4340	3108	7.exe	7.exe
PID 3108 wrote to memory of 4340	3108	7.exe	7.exe
PID 3108 wrote to memory of 4340	3108	7.exe	7.exe
PID 3108 wrote to memory of 4340	3108	7.exe	7.exe
PID 3108 wrote to memory of 4340	3108	7.exe	7.exe
PID 3048 wrote to memory of 5112	3048	Explorer.EXE	msiexec.exe
PID 3048 wrote to memory of 5112	3048	Explorer.EXE	msiexec.exe
PID 3048 wrote to memory of 5112	3048	Explorer.EXE	msiexec.exe
PID 5112 wrote to memory of 4808	5112	msiexec.exe	cmd.exe
PID 5112 wrote to memory of 4808	5112	msiexec.exe	cmd.exe
PID 5112 wrote to memory of 4808	5112	msiexec.exe	cmd.exe
PID 5112 wrote to memory of 4616	5112	msiexec.exe	Firefox.exe
PID 5112 wrote to memory of 4616	5112	msiexec.exe	Firefox.exe
PID 5112 wrote to memory of 4616	5112	msiexec.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:3048

C:\Users\Admin\AppData\Local\Temp\7.exe
"C:\Users\Admin\AppData\Local\Temp\7.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of WriteProcessMemory
PID:3108

C:\Users\Admin\AppData\Local\Temp\7.exe
"C:\Users\Admin\AppData\Local\Temp\7.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:4340

C:\Windows\SysWOW64\msiexec.exe
"C:\Windows\SysWOW64\msiexec.exe"
2⤵
- Adds policy Run key to start application
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:5112

C:\Windows\SysWOW64\cmd.exe
/c del "C:\Users\Admin\AppData\Local\Temp\7.exe"
3⤵
PID:4808

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4616

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

2

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

memory/3048-140-0x00000000024F0000-0x00000000025C6000-memory.dmp

Filesize
856KB

Download
memory/3048-150-0x00000000075E0000-0x00000000076FE000-memory.dmp

Filesize
1.1MB

Download
memory/3048-149-0x00000000075E0000-0x00000000076FE000-memory.dmp

Filesize
1.1MB

Download
memory/3108-133-0x0000000005DF0000-0x0000000006394000-memory.dmp

Filesize
5.6MB

Download
memory/3108-134-0x00000000058B0000-0x0000000005916000-memory.dmp

Filesize
408KB

Download
memory/3108-132-0x0000000000EE0000-0x0000000000F1C000-memory.dmp

Filesize
240KB

Download
memory/4340-135-0x0000000000000000-mapping.dmp

Download
memory/4340-136-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/4340-138-0x0000000001040000-0x000000000138A000-memory.dmp

Filesize
3.3MB

Download
memory/4340-139-0x0000000000FE0000-0x0000000000FF1000-memory.dmp

Filesize
68KB

Download
memory/4340-142-0x0000000000400000-0x000000000042D000-memory.dmp

Filesize
180KB

Download
memory/4808-145-0x0000000000000000-mapping.dmp

Download
memory/5112-141-0x0000000000000000-mapping.dmp

Download
memory/5112-146-0x0000000002610000-0x000000000295A000-memory.dmp

Filesize
3.3MB

Download
memory/5112-147-0x0000000000600000-0x000000000062D000-memory.dmp

Filesize
180KB

Download
memory/5112-148-0x0000000002360000-0x00000000023F0000-memory.dmp

Filesize
576KB

Download
memory/5112-144-0x0000000000600000-0x000000000062D000-memory.dmp

Filesize
180KB

Download
memory/5112-143-0x0000000000C70000-0x0000000000C82000-memory.dmp

Filesize
72KB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads