formbook | 0b064f0ef5c1fc97add6a750c3166edc03d6ebbcf0ed5b0e36cec598ff2e301e

General

Target

yxrp7aBc7KHBCsk.exe
Size

1.1MB
MD5

48ab3af9d46affb38d6bba63215f606f
SHA1

5a5f9ddc5cf46787a03c8cefe1c038274b69f2eb
SHA256

0b064f0ef5c1fc97add6a750c3166edc03d6ebbcf0ed5b0e36cec598ff2e301e
SHA512

7eea0bfbd69f74003a5a24c6ae9cfcb13321454e932bee8026a6ef636e5ad9750aff3b081b6f3bd031578c600df9e3e2a6f0122551540aa23f5ec174bae33647
SSDEEP

24576:0ufO+8zjZ1dSvam6fNgyDh1u7hDi7hdqkMzjVfr:nz8zjZbSz6Vy7UT5OJfr

Score

10^/10

formbook cqd8 rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

cqd8

Decoy

9zPItsSBQPthH0B1

iyz2ugC7TUMEaZEDDTNIzw==

uVc25zCFO03zbYzHxXLElk5HHccFoes=

RYDZw1su7yszucXjwqtgrz1tSccFoes=

AiB+KfBdDLRFs8sOAsmAllKZeg==

w5T7/Y1lNGBeMdKkKNl8tUl3fTWjlURG

mcIHqPCaEavSyg==

YA7dyN6xKf1MKJa/RA==

Dt789IRVd/fO8FeQNOiV3g==

jYfu3dS4b/1OL59exnPPEo4=

SjyOSKD6lRhpWwUmMwE8ncB1KOg=

JIT782/TaO41DXw3hYJa1g==

uT4u7SwA+3yA/iCo0O7tHyeffA==

/gJzPfngDySzwndmyHPPEo4=

+Um8wD7b9bCQ8A9cK4Nl1oA=

RaikVqx5ozxW3vd6khgIHsDMgKrv

hyYEyRMIEJ8WdnFePeLgHyeffA==

bCov6raFJ30odm5fJQQ=

1rMMrXrTf7OZqyLVM708wZ0=

U4nspOC6sJ3et2I=

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Blocklisted process makes network request 1 IoCs

Processes:

cmstp.exe

flow pid process

44 116 cmstp.exe

flow	pid	process
44	116	cmstp.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:

yxrp7aBc7KHBCsk.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2629973501-4017243118-3254762364-1000\Control Panel\International\Geo\Nation	yxrp7aBc7KHBCsk.exe

Reads user/profile data of web browsers 2 TTPs
Infostealers often target stored browser data, which can include saved credentials etc.
spyware stealer

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 3 IoCs

Processes:

yxrp7aBc7KHBCsk.exeyxrp7aBc7KHBCsk.execmstp.exe

description	pid	process	target process
PID 4900 set thread context of 3420	4900	yxrp7aBc7KHBCsk.exe	yxrp7aBc7KHBCsk.exe
PID 3420 set thread context of 2456	3420	yxrp7aBc7KHBCsk.exe	Explorer.EXE
PID 116 set thread context of 2456	116	cmstp.exe	Explorer.EXE

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

cmstp.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2629973501-4017243118-3254762364-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmstp.exe

Suspicious behavior: EnumeratesProcesses 26 IoCs

Processes:

yxrp7aBc7KHBCsk.execmstp.exe

pid	process
3420	yxrp7aBc7KHBCsk.exe
3420	yxrp7aBc7KHBCsk.exe
3420	yxrp7aBc7KHBCsk.exe
3420	yxrp7aBc7KHBCsk.exe
3420	yxrp7aBc7KHBCsk.exe
3420	yxrp7aBc7KHBCsk.exe
3420	yxrp7aBc7KHBCsk.exe
3420	yxrp7aBc7KHBCsk.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe
116	cmstp.exe

Suspicious behavior: MapViewOfSection 5 IoCs

Processes:

yxrp7aBc7KHBCsk.execmstp.exe

pid process

3420 yxrp7aBc7KHBCsk.exe
3420 yxrp7aBc7KHBCsk.exe
3420 yxrp7aBc7KHBCsk.exe
116 cmstp.exe
116 cmstp.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

yxrp7aBc7KHBCsk.execmstp.exe

description pid process

Token: SeDebugPrivilege 3420 yxrp7aBc7KHBCsk.exe
Token: SeDebugPrivilege 116 cmstp.exe
Suspicious use of FindShellTrayWindow 1 IoCs

Processes:

yxrp7aBc7KHBCsk.exe

pid process

4900 yxrp7aBc7KHBCsk.exe
Suspicious use of SendNotifyMessage 1 IoCs

Processes:

yxrp7aBc7KHBCsk.exe

pid process

4900 yxrp7aBc7KHBCsk.exe

description	pid	process
Token: SeDebugPrivilege	3420	yxrp7aBc7KHBCsk.exe
Token: SeDebugPrivilege	116	cmstp.exe

pid	process
4900	yxrp7aBc7KHBCsk.exe

pid	process
4900	yxrp7aBc7KHBCsk.exe

Suspicious use of WriteProcessMemory 9 IoCs

Processes:

yxrp7aBc7KHBCsk.exeExplorer.EXE

description	pid	process	target process
PID 4900 wrote to memory of 3420	4900	yxrp7aBc7KHBCsk.exe	yxrp7aBc7KHBCsk.exe
PID 4900 wrote to memory of 3420	4900	yxrp7aBc7KHBCsk.exe	yxrp7aBc7KHBCsk.exe
PID 4900 wrote to memory of 3420	4900	yxrp7aBc7KHBCsk.exe	yxrp7aBc7KHBCsk.exe
PID 4900 wrote to memory of 3420	4900	yxrp7aBc7KHBCsk.exe	yxrp7aBc7KHBCsk.exe
PID 4900 wrote to memory of 3420	4900	yxrp7aBc7KHBCsk.exe	yxrp7aBc7KHBCsk.exe
PID 4900 wrote to memory of 3420	4900	yxrp7aBc7KHBCsk.exe	yxrp7aBc7KHBCsk.exe
PID 2456 wrote to memory of 116	2456	Explorer.EXE	cmstp.exe
PID 2456 wrote to memory of 116	2456	Explorer.EXE	cmstp.exe
PID 2456 wrote to memory of 116	2456	Explorer.EXE	cmstp.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious use of WriteProcessMemory
PID:2456

C:\Users\Admin\AppData\Local\Temp\yxrp7aBc7KHBCsk.exe
"C:\Users\Admin\AppData\Local\Temp\yxrp7aBc7KHBCsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Suspicious use of FindShellTrayWindow
- Suspicious use of SendNotifyMessage
- Suspicious use of WriteProcessMemory
PID:4900

C:\Users\Admin\AppData\Local\Temp\yxrp7aBc7KHBCsk.exe
"C:\Users\Admin\AppData\Local\Temp\yxrp7aBc7KHBCsk.exe"
3⤵
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:3420

C:\Windows\SysWOW64\cmstp.exe
"C:\Windows\SysWOW64\cmstp.exe"
2⤵
- Blocklisted process makes network request
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:116

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Credentials in Files

1

T1081

Discovery

Query Registry

1

T1012

System Information Discovery

1

T1082

Lateral Movement

Collection

Data from Local System

1

T1005

Exfiltration

Command and Control

Impact

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Downloads

memory/116-155-0x0000000000920000-0x000000000094D000-memory.dmp

Filesize
180KB

Download
memory/116-153-0x0000000002A80000-0x0000000002B0F000-memory.dmp

Filesize
572KB

Download
memory/116-152-0x0000000002B20000-0x0000000002E6A000-memory.dmp

Filesize
3.3MB

Download
memory/116-151-0x0000000000920000-0x000000000094D000-memory.dmp

Filesize
180KB

Download
memory/116-150-0x0000000000ED0000-0x0000000000EE6000-memory.dmp

Filesize
88KB

Download
memory/116-147-0x0000000000000000-mapping.dmp

Download
memory/2456-146-0x00000000080E0000-0x000000000825C000-memory.dmp

Filesize
1.5MB

Download
memory/2456-156-0x00000000070C0000-0x000000000718D000-memory.dmp

Filesize
820KB

Download
memory/2456-154-0x00000000070C0000-0x000000000718D000-memory.dmp

Filesize
820KB

Download
memory/3420-149-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/3420-139-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3420-145-0x0000000000FA0000-0x0000000000FB0000-memory.dmp

Filesize
64KB

Download
memory/3420-142-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/3420-141-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3420-148-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3420-138-0x0000000000000000-mapping.dmp

Download
memory/3420-144-0x0000000001510000-0x000000000185A000-memory.dmp

Filesize
3.3MB

Download
memory/4900-132-0x0000000000F80000-0x00000000010A2000-memory.dmp

Filesize
1.1MB

Download
memory/4900-137-0x0000000001690000-0x00000000016F6000-memory.dmp

Filesize
408KB

Download
memory/4900-136-0x0000000009460000-0x00000000094FC000-memory.dmp

Filesize
624KB

Download
memory/4900-135-0x0000000005A40000-0x0000000005A4A000-memory.dmp

Filesize
40KB

Download
memory/4900-134-0x0000000005A70000-0x0000000005B02000-memory.dmp

Filesize
584KB

Download
memory/4900-133-0x0000000006020000-0x00000000065C4000-memory.dmp

Filesize
5.6MB

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads