f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22

General

Target

f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22N.exe
Size

209KB
MD5

e1e3fc0fbc68988ab64aeeec354e5330
SHA1

389a1ff562b3315013ca273f68b28c4767fb7339
SHA256

f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22
SHA512

27276214548a47264663183037cf8f4887ccc87b85903c68b6b6c99687565997f4ba43edcf8d957876cd4cbfde1feb90f9bd48170b06f887d27c1ce13cf8fc2e
SSDEEP

6144:Ev80+yHEsUsEVBB7kzZl9yJWW1RZHMWmHc6bG:Ev87sUscBN4l94GG

Score

7^/10

defense_evasion discovery

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral2/files/0x000800000002361f-2.dat	acprotect

Executes dropped EXE 1 IoCs

pid	Process
2896	tyxtue.exe

Loads dropped DLL 7 IoCs

pid	Process
1948	f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22N.exe
1948	f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22N.exe
2896	tyxtue.exe
2896	tyxtue.exe
4200	WerFault.exe
1508	WerFault.exe
1508	WerFault.exe

Indicator Removal: File Deletion 1 TTPs
Adversaries may delete files left behind by the actions of their intrusion activity.
defense_evasion

File Deletion
T1070.004

Drops file in System32 directory 2 IoCs

description	ioc	Process
File created	C:\Windows\SysWOW64\tyxtue.exe	f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22N.exe
File opened for modification	C:\Windows\SysWOW64\tyxtue.exe	f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22N.exe

Suspicious use of SetThreadContext 1 IoCs

description	pid	Process	procid_target
PID 2896 set thread context of 2804	2896	tyxtue.exe	90

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1508	2804	WerFault.exe	90

System Location Discovery: System Language Discovery 1 TTPs 3 IoCs

Attempt gather information about the system language of a victim in order to infer the geographical location of that host.

discovery

System Language Discovery

T1614.001

description	ioc	Process
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	tyxtue.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	cmd.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1948	f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22N.exe

Suspicious use of SetWindowsHookEx 2 IoCs

pid	Process
1948	f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22N.exe
2896	tyxtue.exe

Suspicious use of WriteProcessMemory 8 IoCs

description	pid	Process	procid_target
PID 2896 wrote to memory of 2804	2896	tyxtue.exe	90
PID 2896 wrote to memory of 2804	2896	tyxtue.exe	90
PID 2896 wrote to memory of 2804	2896	tyxtue.exe	90
PID 2896 wrote to memory of 2804	2896	tyxtue.exe	90
PID 2896 wrote to memory of 2804	2896	tyxtue.exe	90
PID 1948 wrote to memory of 4996	1948	f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22N.exe	94
PID 1948 wrote to memory of 4996	1948	f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22N.exe	94
PID 1948 wrote to memory of 4996	1948	f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22N.exe	94

C:\Users\Admin\AppData\Local\Temp\f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22N.exe
"C:\Users\Admin\AppData\Local\Temp\f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22N.exe"
1⤵
- Loads dropped DLL
- Drops file in System32 directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:1948
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\F86BF5~1.EXE > nul
  2⤵
  - System Location Discovery: System Language Discovery
  PID:4996

C:\Windows\SysWOW64\tyxtue.exe
C:\Windows\SysWOW64\tyxtue.exe
1⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious use of SetThreadContext
- System Location Discovery: System Language Discovery
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
PID:2896
- C:\Windows\SysWOW64\svchost.exe
  svchost.exe
  2⤵
  PID:2804
- - C:\Windows\SysWOW64\WerFault.exe
    C:\Windows\SysWOW64\WerFault.exe -u -p 2804 -s 12
    3⤵
    - Loads dropped DLL
    - Program crash
    PID:1508

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -pss -s 408 -p 2804 -ip 2804
1⤵
- Loads dropped DLL
PID:4200

C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe
"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --field-trial-handle=4396,i,1602949858158667699,12464335823361976127,262144 --variations-seed-version --mojo-platform-channel-handle=4440 /prefetch:8
1⤵
PID:1672

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Indicator Removal

1

T1070

File Deletion

1

T1070.004

Credential Access

Discovery

System Location Discovery

1

T1614

System Language Discovery

1

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\ehi4929.tmp

Filesize
172KB

MD5
685f1cbd4af30a1d0c25f252d399a666

SHA1
6a1b978f5e6150b88c8634146f1406ed97d2f134

SHA256
0e478c95a7a07570a69e6061e7c1da9001bccad9cc454f2ed4da58824a13e0f4

SHA512
6555ad6b4f4f26105ca8aad64501d74519a3e091f559b4b563d6ffb20a2ddfcde65e4fe94971a9bc65e86db577f2548ca00f9920d341c8ea808b04c0947d61d9

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

Filesize
209KB

MD5
e1e3fc0fbc68988ab64aeeec354e5330

SHA1
389a1ff562b3315013ca273f68b28c4767fb7339

SHA256
f86bf50fd5a62d67fc1e17f263ad2e241e2d297dd172c55cd177e583f2dead22

SHA512
27276214548a47264663183037cf8f4887ccc87b85903c68b6b6c99687565997f4ba43edcf8d957876cd4cbfde1feb90f9bd48170b06f887d27c1ce13cf8fc2e

Download Submit
memory/1948-0-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1948-5-0x0000000000A10000-0x0000000000A83000-memory.dmp

Filesize
460KB

Download
memory/1948-27-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1948-26-0x0000000000A10000-0x0000000000A83000-memory.dmp

Filesize
460KB

Download
memory/2804-18-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2896-19-0x0000000000D20000-0x0000000000D93000-memory.dmp

Filesize
460KB

Download
memory/2896-17-0x0000000000D20000-0x0000000000D93000-memory.dmp

Filesize
460KB

Download
memory/2896-24-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/2896-25-0x0000000000D20000-0x0000000000D93000-memory.dmp

Filesize
460KB

Download

Analysis

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