formbook | 77707d4b60a7193c8c7e93d9c97dcd89513ef4ce1c8e19aa6780920c09e03c27

General

Target
L3fLdu8DyoA55xo.exe
Size 671KB
Sample201027-5neeebbk2e
SHA256 77707d4b60a7193c8c7e93d9c97dcd89513ef4ce1c8e19aa6780920c09e03c27
MD5 ad45827e71cf3ef5efe845f70374b35f
SHA1 fe187d0994e5c03f2b8b93595929f1cd0d166c15
SHA512 366373b53f827d69c418d85f7c19fdb238596b46149e91ddb7685487b8b203e647b56cd2398c391fe57ef558bfef37485887dc559bec6ddcdc2285003f71df77
MD5 SHA1 SHA512

Score

10^/10

Family

C2

Decoy

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

Formbook Payload 3 IoCs

rat

resource	yara_rule
behavioral1/memory/520-60-0x0000000000400000-0x000000000042E000-memory.dmp	formbook
behavioral1/memory/520-61-0x000000000041EB90-mapping.dmp	formbook
behavioral1/memory/740-62-0x0000000000000000-mapping.dmp	formbook

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

Data from Local System
T1005

Credentials in Files
T1081

Suspicious use of SetThreadContext 3 IoCs

description	pid	Process	procid_target
PID 1428 set thread context of 520	1428	L3fLdu8DyoA55xo.exe	30
PID 520 set thread context of 1316	520	L3fLdu8DyoA55xo.exe	20
PID 740 set thread context of 1316	740	cmmon32.exe	20

Creates scheduled task(s) 1 TTPs 1 IoCs

Schtasks is often used by malware for persistence or to perform post-infection execution.

Scheduled Task

pid	Process
1800	schtasks.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

Modify Registry

description	ioc	Process
Key created	\Registry\User\S-1-5-21-4210623931-3856158591-1213714290-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	cmmon32.exe

Suspicious behavior: EnumeratesProcesses 19 IoCs

Suspicious behavior: MapViewOfSection 7 IoCs

Suspicious use of AdjustPrivilegeToken 2 IoCs

description	pid	Process
Token: SeDebugPrivilege	520	L3fLdu8DyoA55xo.exe
Token: SeDebugPrivilege	740	cmmon32.exe

Suspicious use of FindShellTrayWindow 4 IoCs

Suspicious use of SendNotifyMessage 4 IoCs

Suspicious use of WriteProcessMemory 20 IoCs

description	pid	Process	procid_target
PID 1428 wrote to memory of 1800	1428	L3fLdu8DyoA55xo.exe	28
PID 1428 wrote to memory of 1800	1428	L3fLdu8DyoA55xo.exe	28
PID 1428 wrote to memory of 1800	1428	L3fLdu8DyoA55xo.exe	28
PID 1428 wrote to memory of 1800	1428	L3fLdu8DyoA55xo.exe	28
PID 1428 wrote to memory of 520	1428	L3fLdu8DyoA55xo.exe	30
PID 1428 wrote to memory of 520	1428	L3fLdu8DyoA55xo.exe	30
PID 1428 wrote to memory of 520	1428	L3fLdu8DyoA55xo.exe	30
PID 1428 wrote to memory of 520	1428	L3fLdu8DyoA55xo.exe	30
PID 1428 wrote to memory of 520	1428	L3fLdu8DyoA55xo.exe	30
PID 1428 wrote to memory of 520	1428	L3fLdu8DyoA55xo.exe	30
PID 1428 wrote to memory of 520	1428	L3fLdu8DyoA55xo.exe	30
PID 1316 wrote to memory of 740	1316	Explorer.EXE	31
PID 1316 wrote to memory of 740	1316	Explorer.EXE	31
PID 1316 wrote to memory of 740	1316	Explorer.EXE	31
PID 1316 wrote to memory of 740	1316	Explorer.EXE	31
PID 740 wrote to memory of 1728	740	cmmon32.exe	33
PID 740 wrote to memory of 1728	740	cmmon32.exe	33
PID 740 wrote to memory of 1728	740	cmmon32.exe	33
PID 740 wrote to memory of 1728	740	cmmon32.exe	33
PID 740 wrote to memory of 1728	740	cmmon32.exe	33