bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e

General

Target

bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe
Size

356KB
MD5

56bea14a8aa030c2833064841b1e49c4
SHA1

89dc8a1e36b5b0c42b08b7bdf82a0a0ccd5eb35d
SHA256

bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e
SHA512

654ee9568acae59601b6880b2a0c34460ab7934a808b621567f79f1500dcec531852916d308ecce7c70aada1b6a1b2a6eafd26c7836a2ca90cfb528d3b068fe7
SSDEEP

6144:TNXJz6ZQw9FsL57G2/+C+7VXfhSoSWmTh7dnc4z4Q/IueNfn1g5Tzz:ZZzQps7G2/j+BX+W8JnX0buehK5/z

Score

8^/10

discovery evasion persistence trojan

Malware Config

Signatures

Adds policy Run key to start application 2 TTPs 2 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\xtuhn = "C:\\Windows\\SysWOW64\\ttdinjecty.exe"	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe

Drops file in Drivers directory 1 IoCs

description	ioc	Process
File opened for modification	C:\Windows\system32\drivers\etc\hosts	ttdinjecty.exe

Executes dropped EXE 1 IoCs

pid	Process
4772	ttdinjecty.exe

Checks BIOS information in registry 2 TTPs 1 IoCs

BIOS information is often read in order to detect sandboxing environments.

Query Registry

T1012

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\SystemBiosVersion	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.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

description	ioc	Process
Key value queried	\REGISTRY\USER\S-1-5-21-2295526160-1155304984-640977766-1000\Control Panel\International\Geo\Nation	ttdinjecty.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Checks whether UAC is enabled 1 TTPs 1 IoCs

evasion trojan

System Information Discovery

T1082

description	ioc	Process
Key value queried	\REGISTRY\MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\EnableLUA	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\ttdinjecty.exe	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe
File opened for modification	C:\Windows\SysWOW64\ttdinjecty.exe	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe

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

System Information Discovery
T1082

Gathers network information 2 TTPs 1 IoCs

Uses commandline utility to view network configuration.

System Information Discovery

T1082

Command-Line Interface

T1059

pid	Process
4764	ipconfig.exe

Suspicious behavior: EnumeratesProcesses 4 IoCs

pid	Process
3036	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe
3036	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe
3036	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe
3036	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeDebugPrivilege	3036	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe

Suspicious use of SetWindowsHookEx 1 IoCs

pid	Process
4772	ttdinjecty.exe

Suspicious use of WriteProcessMemory 9 IoCs

description	pid	Process	procid_target
PID 3036 wrote to memory of 4772	3036	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe	80
PID 3036 wrote to memory of 4772	3036	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe	80
PID 3036 wrote to memory of 4772	3036	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe	80
PID 3036 wrote to memory of 4928	3036	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe	82
PID 3036 wrote to memory of 4928	3036	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe	82
PID 3036 wrote to memory of 4928	3036	bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe	82
PID 4772 wrote to memory of 4764	4772	ttdinjecty.exe	84
PID 4772 wrote to memory of 4764	4772	ttdinjecty.exe	84
PID 4772 wrote to memory of 4764	4772	ttdinjecty.exe	84

C:\Users\Admin\AppData\Local\Temp\bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe
"C:\Users\Admin\AppData\Local\Temp\bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe"
1⤵
- Adds policy Run key to start application
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:3036
- C:\Windows\SysWOW64\ttdinjecty.exe
  C:\Windows\SysWOW64\ttdinjecty.exe
  2⤵
  - Drops file in Drivers directory
  - Executes dropped EXE
  - Checks computer location settings
  - Suspicious use of SetWindowsHookEx
  - Suspicious use of WriteProcessMemory
  PID:4772
- - C:\Windows\SysWOW64\ipconfig.exe
    "C:\Windows\system32\ipconfig.exe" /flushdns
    3⤵
    - Gathers network information
    PID:4764
- C:\Windows\SysWOW64\cmd.exe
  /c C:\Users\Admin\AppData\Local\Temp\~unins9609.bat "C:\Users\Admin\AppData\Local\Temp\bc3f97e08fc70c5e7663cdcc380bcf7ae0a2b81e5cd6b9907f5f7a8f49cdb86e.exe"
  2⤵
  PID:4928

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Command-Line Interface

1

T1059

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Query Registry

3

T1012

System Information Discovery

5

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

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Downloads

C:\Users\Admin\AppData\Local\Temp\~unins9609.bat

Filesize
49B

MD5
9e0a2f5ab30517809b95a1ff1dd98c53

SHA1
5c1eefdf10e67d1e9216e2e3f5e92352d583c9ce

SHA256
97ac9fee75a1f7b63b3115e9c4fb9dda80b1caba26d2fb51325670dee261fe32

SHA512
e959cc1fd48fb1cccf135a697924c775a3812bab211fc7f9b00c5a9d617261d84c5d6f7cb548774c1e8f46811b06ca39c5603d0e10cbcb7b805f9abbe49b9b42

Download Submit
C:\Windows\SysWOW64\ttdinjecty.exe

Filesize
104KB

MD5
f9fe7f1373a59bb9f229edb5f5e02ef9

SHA1
5dbbaf2287a32b5bfa3451011e8cc6952b28a8ee

SHA256
e39110076e939049c795d4842384bc971c0b7913bfe52775711be2a4ebf3444d

SHA512
07a905e91f8df3b496b23160c9a30a01e3b92d96b94976df9679df69f781ec94797ce028cae2aa0a8239e80b33a52703cc7886b46400c4afdcfa965d1f0807ae

Download Submit
C:\Windows\SysWOW64\ttdinjecty.exe

Filesize
104KB

MD5
f9fe7f1373a59bb9f229edb5f5e02ef9

SHA1
5dbbaf2287a32b5bfa3451011e8cc6952b28a8ee

SHA256
e39110076e939049c795d4842384bc971c0b7913bfe52775711be2a4ebf3444d

SHA512
07a905e91f8df3b496b23160c9a30a01e3b92d96b94976df9679df69f781ec94797ce028cae2aa0a8239e80b33a52703cc7886b46400c4afdcfa965d1f0807ae

Download Submit
memory/3036-133-0x0000000000400000-0x000000000049D000-memory.dmp

Filesize
628KB

Download
memory/3036-134-0x00000000020B0000-0x000000000213F000-memory.dmp

Filesize
572KB

Download
memory/3036-138-0x0000000000400000-0x000000000049D000-memory.dmp

Filesize
628KB

Download
memory/4772-142-0x0000000000401000-0x0000000000403000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v6

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Downloads