formbook | 1d05865cde860a1f608fd49bb66177de78e910bb2dc231b57908a388dea5c0c2

General

Target

tmp.exe
Size

226KB
MD5

f30dc6dd8fe2e44bf9b8c45115e6f83c
SHA1

cf0033fda00be69b914807455b696b37c24ad9cf
SHA256

1d05865cde860a1f608fd49bb66177de78e910bb2dc231b57908a388dea5c0c2
SHA512

7116d1742238ee2299f135a9f5d35ed0ff857710eb7c8ca2d99c32cab68ed9b39c906219c3933fc2bdd776319ca13ceebb345b25816898ac347a6eff6c818d72
SSDEEP

3072:qUJoFfWzzl+cSMgi/+Ddy9YOmX3ucUiO0avrbjIO127nn9ubNZnf1wAUYqqRKgsM:qweEp5l9rkuWzcEfn9ySIi+3MuOZW

Score

10^/10

formbook f4ca rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

f4ca

Decoy

omFHB5ajfJi1UEIEV9XcoRw=

UBjJkmQPyprdhcFF/bdCWQ==

evGKkBUj1je+otcfpw==

KgvGVeOATSt3nug0BIOm2JvOQycB

Lv6o3K0r9aSjI0lr9fg1txw=

LH1jJb/HieQpsEdqWCQTvX2PmsDVIeg=

99dte0XauJfk6Xv+uQxJFgA1gMktBA==

21FkkGB9gMniDQw2ffu6

r4lKBM/q6TZwVZfS

F+14qHeVWi56KdQ=

BgWXRsVoICMvvQ==

I+EozFl0Uy56KdQ=

xoXCgEllKEbWfjFCCLo=

qo9G1lXvvGt5GkxrLQWw

ORNlYic0PJ2ip4geEFSv

Yj+GFpvFxy0uVYx1fLI/XQ==

XL+veIKPjOTe4fjvFs+n

D2JKVAfuakXCAyoEvw==

voWJU81tH56wvt/vImbCcgVd

dVEcwFrmb8bZ4vXvFs+n

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
Executes dropped EXE 2 IoCs

Processes:

yuyojlpdd.exeyuyojlpdd.exe

pid process

3044 yuyojlpdd.exe
2160 yuyojlpdd.exe

pid	process
3044	yuyojlpdd.exe
2160	yuyojlpdd.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:

yuyojlpdd.exe

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

Suspicious use of SetThreadContext 3 IoCs

Processes:

yuyojlpdd.exeyuyojlpdd.exemsdt.exe

description	pid	process	target process
PID 3044 set thread context of 2160	3044	yuyojlpdd.exe	yuyojlpdd.exe
PID 2160 set thread context of 376	2160	yuyojlpdd.exe	Explorer.EXE
PID 1288 set thread context of 376	1288	msdt.exe	Explorer.EXE

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

System Information Discovery
T1082

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

msdt.exe

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

Suspicious behavior: EnumeratesProcesses 62 IoCs

Processes:

yuyojlpdd.exemsdt.exe

pid	process
2160	yuyojlpdd.exe
2160	yuyojlpdd.exe
2160	yuyojlpdd.exe
2160	yuyojlpdd.exe
2160	yuyojlpdd.exe
2160	yuyojlpdd.exe
2160	yuyojlpdd.exe
2160	yuyojlpdd.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

Processes:

Explorer.EXE

pid process

376 Explorer.EXE
Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

yuyojlpdd.exeyuyojlpdd.exemsdt.exe

pid process

3044 yuyojlpdd.exe
2160 yuyojlpdd.exe
2160 yuyojlpdd.exe
2160 yuyojlpdd.exe
1288 msdt.exe
1288 msdt.exe
1288 msdt.exe
1288 msdt.exe
Suspicious use of AdjustPrivilegeToken 2 IoCs

Processes:

yuyojlpdd.exemsdt.exe

description pid process

Token: SeDebugPrivilege 2160 yuyojlpdd.exe
Token: SeDebugPrivilege 1288 msdt.exe

pid	process
376	Explorer.EXE

pid	process
3044	yuyojlpdd.exe
2160	yuyojlpdd.exe
2160	yuyojlpdd.exe
2160	yuyojlpdd.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe
1288	msdt.exe

description	pid	process
Token: SeDebugPrivilege	2160	yuyojlpdd.exe
Token: SeDebugPrivilege	1288	msdt.exe

Suspicious use of WriteProcessMemory 13 IoCs

Processes:

tmp.exeyuyojlpdd.exeExplorer.EXEmsdt.exe

description	pid	process	target process
PID 4856 wrote to memory of 3044	4856	tmp.exe	yuyojlpdd.exe
PID 4856 wrote to memory of 3044	4856	tmp.exe	yuyojlpdd.exe
PID 4856 wrote to memory of 3044	4856	tmp.exe	yuyojlpdd.exe
PID 3044 wrote to memory of 2160	3044	yuyojlpdd.exe	yuyojlpdd.exe
PID 3044 wrote to memory of 2160	3044	yuyojlpdd.exe	yuyojlpdd.exe
PID 3044 wrote to memory of 2160	3044	yuyojlpdd.exe	yuyojlpdd.exe
PID 3044 wrote to memory of 2160	3044	yuyojlpdd.exe	yuyojlpdd.exe
PID 376 wrote to memory of 1288	376	Explorer.EXE	msdt.exe
PID 376 wrote to memory of 1288	376	Explorer.EXE	msdt.exe
PID 376 wrote to memory of 1288	376	Explorer.EXE	msdt.exe
PID 1288 wrote to memory of 4904	1288	msdt.exe	Firefox.exe
PID 1288 wrote to memory of 4904	1288	msdt.exe	Firefox.exe
PID 1288 wrote to memory of 4904	1288	msdt.exe	Firefox.exe

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of WriteProcessMemory
PID:376

C:\Users\Admin\AppData\Local\Temp\tmp.exe
"C:\Users\Admin\AppData\Local\Temp\tmp.exe"
2⤵
- Suspicious use of WriteProcessMemory
PID:4856

C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe
"C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe"
3⤵
- Executes dropped EXE
- Suspicious use of SetThreadContext
- Suspicious behavior: MapViewOfSection
- Suspicious use of WriteProcessMemory
PID:3044

C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe
"C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe"
4⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:2160

C:\Windows\SysWOW64\msdt.exe
"C:\Windows\SysWOW64\msdt.exe"
2⤵
- Suspicious use of SetThreadContext
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1288

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:4904

Network

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

1

T1012

System Information Discovery

2

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\uxihpr.zx
Filesize
5KB

MD5
d54e51cfe2eb61eecb8518184631a900

SHA1
a4c20513e75bf1785f4b5658328f7623635f6d53

SHA256
807d62f7c4ec7ff7804a8a88ce0d2f5be710e163d65e6c709ec9f6a675f73d10

SHA512
d0e8397bfaf380622d50aeeb85ae63c3f547a2237f4a5ce43b2f67f79464bbfe46c7f539f1ea42622e7f958aba42375d45d75838bb10403cb398ed61352597f0

Download Submit
C:\Users\Admin\AppData\Local\Temp\wvvuxvn.cc
Filesize
185KB

MD5
91c02a03c98d9b9fcefdf2c006ad2e51

SHA1
00bc63213b18fe2a1e54560e93c74c83837bbdcb

SHA256
014d38ffaa628106fab91c0f5ca1682624b80891f681ddce51a12dd569ff4c89

SHA512
4fb0f6585fb93af610cdfd06eb06c7038fca1e75226fd440d43a7d948e5492621bf25a9bd69271f00029c27a44563bf4ee8f3bc12651407192497567cf120fad

Download Submit
C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe
Filesize
8KB

MD5
b4d86ad7d19d5582a1cdd164f173d183

SHA1
62e9ea7e253105348dc04f87f49c5b83fd6abdc6

SHA256
8b034e2390d543fca81b71124c29304ee20a8d053170709fa11f061141ed11d2

SHA512
a512b5161249857d13640dfd1797c8dfd097e42a402ba546f6a4b8e272e3b050f3c2453faa86fe41cdda5a5216d2a50131c0c683ff0bfaf8887ef150a63a0180

Download Submit
C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe
Filesize
8KB

MD5
b4d86ad7d19d5582a1cdd164f173d183

SHA1
62e9ea7e253105348dc04f87f49c5b83fd6abdc6

SHA256
8b034e2390d543fca81b71124c29304ee20a8d053170709fa11f061141ed11d2

SHA512
a512b5161249857d13640dfd1797c8dfd097e42a402ba546f6a4b8e272e3b050f3c2453faa86fe41cdda5a5216d2a50131c0c683ff0bfaf8887ef150a63a0180

Download Submit
C:\Users\Admin\AppData\Local\Temp\yuyojlpdd.exe
Filesize
8KB

MD5
b4d86ad7d19d5582a1cdd164f173d183

SHA1
62e9ea7e253105348dc04f87f49c5b83fd6abdc6

SHA256
8b034e2390d543fca81b71124c29304ee20a8d053170709fa11f061141ed11d2

SHA512
a512b5161249857d13640dfd1797c8dfd097e42a402ba546f6a4b8e272e3b050f3c2453faa86fe41cdda5a5216d2a50131c0c683ff0bfaf8887ef150a63a0180

Download Submit
memory/376-153-0x00000000085B0000-0x000000000873B000-memory.dmp

Filesize
1.5MB

Download
memory/376-151-0x00000000085B0000-0x000000000873B000-memory.dmp

Filesize
1.5MB

Download
memory/376-143-0x0000000008170000-0x00000000082CD000-memory.dmp

Filesize
1.4MB

Download
memory/1288-147-0x0000000000690000-0x00000000006E7000-memory.dmp

Filesize
348KB

Download
memory/1288-152-0x0000000000A30000-0x0000000000A5D000-memory.dmp

Filesize
180KB

Download
memory/1288-150-0x0000000002860000-0x00000000028EF000-memory.dmp

Filesize
572KB

Download
memory/1288-149-0x0000000002CB0000-0x0000000002FFA000-memory.dmp

Filesize
3.3MB

Download
memory/1288-144-0x0000000000000000-mapping.dmp

Download
memory/1288-148-0x0000000000A30000-0x0000000000A5D000-memory.dmp

Filesize
180KB

Download
memory/2160-137-0x0000000000000000-mapping.dmp

Download
memory/2160-146-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/2160-145-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2160-142-0x0000000000F40000-0x0000000000F50000-memory.dmp

Filesize
64KB

Download
memory/2160-141-0x00000000013F0000-0x000000000173A000-memory.dmp

Filesize
3.3MB

Download
memory/2160-140-0x0000000000401000-0x000000000042F000-memory.dmp

Filesize
184KB

Download
memory/2160-139-0x0000000000400000-0x000000000042F000-memory.dmp

Filesize
188KB

Download
memory/3044-132-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads