formbook | fc15ab19130fccdae7dee477e0ae6d711fe3492cbac1b7e5d472eae4902f9516

General

Target

PROOF OF PAYMENT.exe
Size

24KB
MD5

7f99d249840dc2c5009b4771f887336e
SHA1

0a4de6946dca7444da62b7794bcb59e553108f0c
SHA256

fc15ab19130fccdae7dee477e0ae6d711fe3492cbac1b7e5d472eae4902f9516
SHA512

2dc950577ee4fa9b999d044cbb93aa365b13eb5a012633e7ec61410536790080c6c2f3be9f684ac3f11694b51d40d4732aa9975d91fd0c2b68c6e9d66a204237
SSDEEP

384:JwkCN7n8OIo3A12++XCCvcXEMA+7QEh2Fobm22:5CNz8OBnMA8R2

Score

10^/10

formbook nanocore a520 evasion keylogger persistence rat spyware stealer trojan

Malware Config

Extracted

Family

formbook

Campaign

a520

Decoy

/gLFv8NVc2nqbYCCoHLJDBi+TWOu

sjwFU14OMEn7e45Z11ou

stKh65U2h0eAsE3C4do=

tk5xxHYnTytQmuXoUyhstM+PmMM3eNzI

VExtu7dXhpO5DVpouFRxSlhP

YdSW3s9Pg88HRHs7IfKVBk8dGis=

/LJ5vLk+mifRECHWQPfgWQ==

/4qc8tqSwrszxE3C4do=

e4IkI9v2EV+ertKMol1xSlhP

VlwmZCwqUvsUbriqC/RU8Hnh9yM=

o8+X4ZkxbmtygJJZ11ou

YPS3vnb0JRuS8CAOQ0OY2PG4s8U3eNzI

JT5iqFqVvyfGCDX2Httopp4=

2qeFp5QULYE4suWiry9MYFtH

6OaHllqHu+H49V0VCw==

c4xPnUPM8hW3Nldbq6j8X+iVlQ==

s0tmqKSyw0FK0vLpFZ1mX+iVlQ==

SWU1e3eTqiCzv8TIDAtus757e6k3eNzI

CcDlcuyGx8ZDyynuQjQLRg==

KNq19/KCns+bobJdXiXu9AK+TWOu

Extracted

Family

nanocore

Version

1.2.2.0

C2

amechi.duckdns.org:4190

Mutex

7766992d-5166-4919-9d26-1d114e11093c

Attributes

activate_away_mode
true
backup_connection_host
amechi.duckdns.org
backup_dns_server
8.8.4.4
buffer_size
65535
build_time
2022-06-17T10:10:35.253943636Z
bypass_user_account_control
true
bypass_user_account_control_data
clear_access_control
true
clear_zone_identifier
false
connect_delay
4000
connection_port
4190
default_group
NEW TRY FOR SUCCESS
enable_debug_mode
true
gc_threshold
1.048576e+07
keep_alive_timeout
30000
keyboard_logging
false
lan_timeout
2500
max_packet_size
1.048576e+07
mutex
7766992d-5166-4919-9d26-1d114e11093c
mutex_timeout
5000
prevent_system_sleep
false
primary_connection_host
amechi.duckdns.org
primary_dns_server
8.8.8.8
request_elevation
true
restart_delay
5000
run_delay
0
run_on_startup
false
set_critical_process
true
timeout_interval
5000
use_custom_dns_server
false
version
1.2.2.0
wan_timeout
8000

Signatures

Formbook
Formbook is a data stealing malware which is capable of stealing data.
trojan spyware stealer formbook
NanoCore
NanoCore is a remote access tool (RAT) with a variety of capabilities.
keylogger trojan stealer spyware nanocore
Executes dropped EXE 1 IoCs

Processes:

Bjlavuqqxsfvuyykucvpptdbin.exe

pid process

792 Bjlavuqqxsfvuyykucvpptdbin.exe

Checks computer location settings 2 TTPs 2 IoCs

Looks up country code configured in the registry, likely geofence.

Query Registry

T1012

System Information Discovery

T1082

Processes:

PROOF OF PAYMENT.exeBjlavuqqxsfvuyykucvpptdbin.exe

description	ioc	process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	PROOF OF PAYMENT.exe
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	Bjlavuqqxsfvuyykucvpptdbin.exe

Adds Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

PROOF OF PAYMENT.exePROOF OF PAYMENT.exe

description	ioc	process
Set value (str)	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\game = "\"C:\\Users\\Admin\\AppData\\Roaming\\game.exe\""	PROOF OF PAYMENT.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\WOW6432Node\Microsoft\Windows\CurrentVersion\Run\DDP Host = "C:\\Program Files (x86)\\DDP Host\\ddphost.exe"	PROOF OF PAYMENT.exe

Checks whether UAC is enabled 1 TTPs 1 IoCs
evasion trojan

System Information Discovery
T1082

Processes:

PROOF OF PAYMENT.exe

description ioc process

Key value queried \REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA PROOF OF PAYMENT.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	PROOF OF PAYMENT.exe

Suspicious use of SetThreadContext 4 IoCs

Processes:

Bjlavuqqxsfvuyykucvpptdbin.exePROOF OF PAYMENT.exechkdsk.exe

description	pid	process	target process
PID 792 set thread context of 2692	792	Bjlavuqqxsfvuyykucvpptdbin.exe	Explorer.EXE
PID 3064 set thread context of 2000	3064	PROOF OF PAYMENT.exe	PROOF OF PAYMENT.exe
PID 792 set thread context of 2692	792	Bjlavuqqxsfvuyykucvpptdbin.exe	Explorer.EXE
PID 1480 set thread context of 2692	1480	chkdsk.exe	Explorer.EXE

Drops file in Program Files directory 2 IoCs

Processes:

PROOF OF PAYMENT.exe

description	ioc	process
File created	C:\Program Files (x86)\DDP Host\ddphost.exe	PROOF OF PAYMENT.exe
File opened for modification	C:\Program Files (x86)\DDP Host\ddphost.exe	PROOF OF PAYMENT.exe

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

System Information Discovery
T1082
Enumerates system info in registry 2 TTPs 1 IoCs

Query Registry
T1012

System Information Discovery
T1082

Processes:

chkdsk.exe

description ioc process

Key value queried \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier chkdsk.exe

description	ioc	process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\Identifier	chkdsk.exe

Modifies Internet Explorer settings 1 TTPs 1 IoCs

adware spyware

Modify Registry

T1112

Processes:

chkdsk.exe

description	ioc	process
Key created	\Registry\User\S-1-5-21-2295526160-1155304984-640977766-1000\SOFTWARE\Microsoft\Internet Explorer\IntelliForms\Storage2	chkdsk.exe

Suspicious behavior: EnumeratesProcesses 49 IoCs

Processes:

powershell.exeBjlavuqqxsfvuyykucvpptdbin.exePROOF OF PAYMENT.exechkdsk.exe

pid	process
3184	powershell.exe
3184	powershell.exe
792	Bjlavuqqxsfvuyykucvpptdbin.exe
792	Bjlavuqqxsfvuyykucvpptdbin.exe
792	Bjlavuqqxsfvuyykucvpptdbin.exe
792	Bjlavuqqxsfvuyykucvpptdbin.exe
792	Bjlavuqqxsfvuyykucvpptdbin.exe
792	Bjlavuqqxsfvuyykucvpptdbin.exe
792	Bjlavuqqxsfvuyykucvpptdbin.exe
792	Bjlavuqqxsfvuyykucvpptdbin.exe
2000	PROOF OF PAYMENT.exe
2000	PROOF OF PAYMENT.exe
2000	PROOF OF PAYMENT.exe
792	Bjlavuqqxsfvuyykucvpptdbin.exe
792	Bjlavuqqxsfvuyykucvpptdbin.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe

Suspicious behavior: GetForegroundWindowSpam 2 IoCs

Processes:

PROOF OF PAYMENT.exeExplorer.EXE

pid process

2000 PROOF OF PAYMENT.exe
2692 Explorer.EXE

pid	process
2000	PROOF OF PAYMENT.exe
2692	Explorer.EXE

Suspicious behavior: MapViewOfSection 8 IoCs

Processes:

Bjlavuqqxsfvuyykucvpptdbin.exechkdsk.exe

pid	process
792	Bjlavuqqxsfvuyykucvpptdbin.exe
792	Bjlavuqqxsfvuyykucvpptdbin.exe
792	Bjlavuqqxsfvuyykucvpptdbin.exe
792	Bjlavuqqxsfvuyykucvpptdbin.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe
1480	chkdsk.exe

Suspicious use of AdjustPrivilegeToken 7 IoCs

Processes:

PROOF OF PAYMENT.exepowershell.exeBjlavuqqxsfvuyykucvpptdbin.exeExplorer.EXEPROOF OF PAYMENT.exechkdsk.exe

description	pid	process
Token: SeDebugPrivilege	3064	PROOF OF PAYMENT.exe
Token: SeDebugPrivilege	3184	powershell.exe
Token: SeDebugPrivilege	792	Bjlavuqqxsfvuyykucvpptdbin.exe
Token: SeShutdownPrivilege	2692	Explorer.EXE
Token: SeCreatePagefilePrivilege	2692	Explorer.EXE
Token: SeDebugPrivilege	2000	PROOF OF PAYMENT.exe
Token: SeDebugPrivilege	1480	chkdsk.exe

Suspicious use of WriteProcessMemory 20 IoCs

Processes:

PROOF OF PAYMENT.exeExplorer.EXEchkdsk.exe

description	pid	process	target process
PID 3064 wrote to memory of 3184	3064	PROOF OF PAYMENT.exe	powershell.exe
PID 3064 wrote to memory of 3184	3064	PROOF OF PAYMENT.exe	powershell.exe
PID 3064 wrote to memory of 3184	3064	PROOF OF PAYMENT.exe	powershell.exe
PID 3064 wrote to memory of 792	3064	PROOF OF PAYMENT.exe	Bjlavuqqxsfvuyykucvpptdbin.exe
PID 3064 wrote to memory of 792	3064	PROOF OF PAYMENT.exe	Bjlavuqqxsfvuyykucvpptdbin.exe
PID 3064 wrote to memory of 792	3064	PROOF OF PAYMENT.exe	Bjlavuqqxsfvuyykucvpptdbin.exe
PID 3064 wrote to memory of 2000	3064	PROOF OF PAYMENT.exe	PROOF OF PAYMENT.exe
PID 3064 wrote to memory of 2000	3064	PROOF OF PAYMENT.exe	PROOF OF PAYMENT.exe
PID 3064 wrote to memory of 2000	3064	PROOF OF PAYMENT.exe	PROOF OF PAYMENT.exe
PID 3064 wrote to memory of 2000	3064	PROOF OF PAYMENT.exe	PROOF OF PAYMENT.exe
PID 3064 wrote to memory of 2000	3064	PROOF OF PAYMENT.exe	PROOF OF PAYMENT.exe
PID 3064 wrote to memory of 2000	3064	PROOF OF PAYMENT.exe	PROOF OF PAYMENT.exe
PID 3064 wrote to memory of 2000	3064	PROOF OF PAYMENT.exe	PROOF OF PAYMENT.exe
PID 3064 wrote to memory of 2000	3064	PROOF OF PAYMENT.exe	PROOF OF PAYMENT.exe
PID 2692 wrote to memory of 1480	2692	Explorer.EXE	chkdsk.exe
PID 2692 wrote to memory of 1480	2692	Explorer.EXE	chkdsk.exe
PID 2692 wrote to memory of 1480	2692	Explorer.EXE	chkdsk.exe
PID 1480 wrote to memory of 2480	1480	chkdsk.exe	Firefox.exe
PID 1480 wrote to memory of 2480	1480	chkdsk.exe	Firefox.exe
PID 1480 wrote to memory of 2480	1480	chkdsk.exe	Firefox.exe

C:\Users\Admin\AppData\Local\Temp\PROOF OF PAYMENT.exe
"C:\Users\Admin\AppData\Local\Temp\PROOF OF PAYMENT.exe"
1⤵
- Checks computer location settings
- Adds Run key to start application
- Suspicious use of SetThreadContext
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3064

C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exe
"C:\Windows\System32\WindowsPowerShell\v1.0\powershell.exe" -enc UwB0AGEAcgB0AC0AUwBsAGUAZQBwACAALQBTAGUAYwBvAG4AZABzACAAMwAxAA==
2⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
PID:3184

C:\Users\Admin\AppData\Local\Temp\Bjlavuqqxsfvuyykucvpptdbin.exe
"C:\Users\Admin\AppData\Local\Temp\Bjlavuqqxsfvuyykucvpptdbin.exe"
2⤵
- Executes dropped EXE
- Checks computer location settings
- Suspicious use of SetThreadContext
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
PID:792

C:\Users\Admin\AppData\Local\Temp\PROOF OF PAYMENT.exe
"C:\Users\Admin\AppData\Local\Temp\PROOF OF PAYMENT.exe"
2⤵
- Adds Run key to start application
- Checks whether UAC is enabled
- Drops file in Program Files directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
PID:2000

C:\Windows\Explorer.EXE
C:\Windows\Explorer.EXE
1⤵
- Suspicious behavior: GetForegroundWindowSpam
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2692

C:\Windows\SysWOW64\chkdsk.exe
"C:\Windows\SysWOW64\chkdsk.exe"
2⤵
- Suspicious use of SetThreadContext
- Enumerates system info in registry
- Modifies Internet Explorer settings
- Suspicious behavior: EnumeratesProcesses
- Suspicious behavior: MapViewOfSection
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1480

C:\Program Files\Mozilla Firefox\Firefox.exe
"C:\Program Files\Mozilla Firefox\Firefox.exe"
3⤵
PID:2480

Network

MITRE ATT&CK Matrix ATT&CK 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

2

T1012

System Information Discovery

4

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

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Downloads

C:\Users\Admin\AppData\Local\Microsoft\CLR_v4.0_32\UsageLogs\PROOF OF PAYMENT.exe.log
Filesize
1KB

MD5
4f3fab3e5f44399e7f4162fd367eca2d

SHA1
adada0591db5f53bcc0565942047156de3464e6e

SHA256
5db52f2a6a0fbfaa29e27418a1b72b660298dfa58a12ac0f12897a06e557caef

SHA512
d8c3fe3a91e572627e31a44d88a71fc3072786b074d04484ff6aacfeab43e0d29ec88bf6ad2af2a5f8e70f0c0eea95dcea59a8159adf4c642e5f8fd5fc632db7

Download Submit
C:\Users\Admin\AppData\Local\Temp\Bjlavuqqxsfvuyykucvpptdbin.exe
Filesize
185KB

MD5
81a6c3beb08a0f5029528dbbaa991dd7

SHA1
cca8dd79b8a4710baa1726a476227b3e25ecf056

SHA256
096a5d8dd996c380d7fc28c0350836b9c3cdf2651099869eb64b430145af939d

SHA512
1332f16ef45280e74976a29766b468c7f0679744bbe6382b25b85ce60c5d4e0e3af22f537307be62f2ba0276519ad5b90e42e32c41d34287009ca3cbbcf1a366

Download Submit
C:\Users\Admin\AppData\Local\Temp\Bjlavuqqxsfvuyykucvpptdbin.exe
Filesize
185KB

MD5
81a6c3beb08a0f5029528dbbaa991dd7

SHA1
cca8dd79b8a4710baa1726a476227b3e25ecf056

SHA256
096a5d8dd996c380d7fc28c0350836b9c3cdf2651099869eb64b430145af939d

SHA512
1332f16ef45280e74976a29766b468c7f0679744bbe6382b25b85ce60c5d4e0e3af22f537307be62f2ba0276519ad5b90e42e32c41d34287009ca3cbbcf1a366

Download Submit
memory/792-157-0x00000000015C0000-0x00000000015D0000-memory.dmp

Filesize
64KB

Download
memory/792-160-0x0000000000590000-0x00000000005BF000-memory.dmp

Filesize
188KB

Download
memory/792-150-0x00000000015D0000-0x000000000191A000-memory.dmp

Filesize
3.3MB

Download
memory/792-149-0x0000000000590000-0x00000000005BF000-memory.dmp

Filesize
188KB

Download
memory/792-155-0x0000000001130000-0x0000000001140000-memory.dmp

Filesize
64KB

Download
memory/792-146-0x0000000000000000-mapping.dmp

Download
memory/1480-164-0x0000000001260000-0x00000000012EF000-memory.dmp

Filesize
572KB

Download
memory/1480-162-0x00000000015C0000-0x000000000190A000-memory.dmp

Filesize
3.3MB

Download
memory/1480-161-0x0000000000120000-0x000000000012A000-memory.dmp

Filesize
40KB

Download
memory/1480-163-0x0000000000C90000-0x0000000000CBD000-memory.dmp

Filesize
180KB

Download
memory/1480-159-0x0000000000000000-mapping.dmp

Download
memory/1480-165-0x0000000000C90000-0x0000000000CBD000-memory.dmp

Filesize
180KB

Download
memory/2000-152-0x0000000000400000-0x0000000000438000-memory.dmp

Filesize
224KB

Download
memory/2000-151-0x0000000000000000-mapping.dmp

Download
memory/2000-154-0x0000000004F00000-0x0000000004F9C000-memory.dmp

Filesize
624KB

Download
memory/2692-158-0x0000000004D40000-0x0000000004E22000-memory.dmp

Filesize
904KB

Download
memory/2692-166-0x0000000008700000-0x0000000008872000-memory.dmp

Filesize
1.4MB

Download
memory/2692-167-0x0000000008700000-0x0000000008872000-memory.dmp

Filesize
1.4MB

Download
memory/2692-156-0x0000000003480000-0x0000000003568000-memory.dmp

Filesize
928KB

Download
memory/3064-134-0x0000000005450000-0x00000000059F4000-memory.dmp

Filesize
5.6MB

Download
memory/3064-135-0x0000000004F40000-0x0000000004FD2000-memory.dmp

Filesize
584KB

Download
memory/3064-133-0x0000000000360000-0x000000000036C000-memory.dmp

Filesize
48KB

Download
memory/3064-137-0x0000000006590000-0x00000000065B2000-memory.dmp

Filesize
136KB

Download
memory/3064-136-0x0000000004E40000-0x0000000004E4A000-memory.dmp

Filesize
40KB

Download
memory/3184-145-0x0000000006800000-0x000000000681A000-memory.dmp

Filesize
104KB

Download
memory/3184-144-0x0000000007B30000-0x00000000081AA000-memory.dmp

Filesize
6.5MB

Download
memory/3184-143-0x0000000006320000-0x000000000633E000-memory.dmp

Filesize
120KB

Download
memory/3184-141-0x0000000005C30000-0x0000000005C96000-memory.dmp

Filesize
408KB

Download
memory/3184-140-0x00000000053D0000-0x00000000059F8000-memory.dmp

Filesize
6.2MB

Download
memory/3184-139-0x0000000004D60000-0x0000000004D96000-memory.dmp

Filesize
216KB

Download
memory/3184-142-0x0000000005D10000-0x0000000005D76000-memory.dmp

Filesize
408KB

Download
memory/3184-138-0x0000000000000000-mapping.dmp

Download

Analysis

Sharing

General

Malware Config

Extracted

Extracted

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads