ad21956bf5a65d88ac21e74d90c1ad119d81f732d1b2e8db30180b149531d419

General

Target

37e440169a8f25d185e0547245390910N.exe
Size

82KB
MD5

37e440169a8f25d185e0547245390910
SHA1

6ba3e7574cdfc8a7e463a8f6f8ba418edbd68795
SHA256

ad21956bf5a65d88ac21e74d90c1ad119d81f732d1b2e8db30180b149531d419
SHA512

25b41a92aa02f3ea2416549a17defa1eea2c7a17a0cb8af71e28c8686fbffef69e8d6e58f38024f5b0ccc55439bd313d3624a10803fa24b9440f8e216219608f
SSDEEP

768:ChZr2QJL5hMroyCqk6UHLe5XpEs9DLc30spTQcS0NQ:sZdJL5KrMzpH65GcEpZQcSE

Score

7^/10

Malware Config

Signatures

Deletes itself 1 IoCs

pid	Process
1496	cmd.exe

Executes dropped EXE 1 IoCs

pid	Process
1620	kbjhost.exe

UPX packed file 7 IoCs

Detects executables packed with UPX/modified UPX open source packer.

upx

resource	yara_rule
behavioral1/memory/1792-1-0x0000000010000000-0x000000001000E000-memory.dmp	upx
behavioral1/memory/1792-4-0x0000000010000000-0x000000001000E000-memory.dmp	upx
behavioral1/memory/1620-12-0x0000000010000000-0x000000001000E000-memory.dmp	upx
behavioral1/memory/1620-18-0x0000000010000000-0x000000001000E000-memory.dmp	upx
behavioral1/memory/1620-19-0x0000000010000000-0x000000001000E000-memory.dmp	upx
behavioral1/memory/1620-22-0x0000000010000000-0x000000001000E000-memory.dmp	upx
behavioral1/memory/1620-30-0x0000000010000000-0x000000001000E000-memory.dmp	upx

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 Windows directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\AppPatch\IME\kbjhost.exe	37e440169a8f25d185e0547245390910N.exe
File created	C:\Windows\AppPatch\IME\kbjhost.exe	37e440169a8f25d185e0547245390910N.exe

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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	37e440169a8f25d185e0547245390910N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	kbjhost.exe

Suspicious use of AdjustPrivilegeToken 1 IoCs

description	pid	Process
Token: SeIncBasePriorityPrivilege	1792	37e440169a8f25d185e0547245390910N.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1792 wrote to memory of 1496	1792	37e440169a8f25d185e0547245390910N.exe	31
PID 1792 wrote to memory of 1496	1792	37e440169a8f25d185e0547245390910N.exe	31
PID 1792 wrote to memory of 1496	1792	37e440169a8f25d185e0547245390910N.exe	31
PID 1792 wrote to memory of 1496	1792	37e440169a8f25d185e0547245390910N.exe	31

C:\Users\Admin\AppData\Local\Temp\37e440169a8f25d185e0547245390910N.exe
"C:\Users\Admin\AppData\Local\Temp\37e440169a8f25d185e0547245390910N.exe"
1⤵
- Drops file in Windows directory
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:1792
- C:\Windows\SysWOW64\cmd.exe
  C:\Windows\system32\cmd.exe /c del C:\Users\Admin\AppData\Local\Temp\37E440~1.EXE > nul
  2⤵
  - Deletes itself
  - System Location Discovery: System Language Discovery
  PID:1496

C:\Windows\AppPatch\IME\kbjhost.exe
C:\Windows\AppPatch\IME\kbjhost.exe
1⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1620

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

Loading Replay Monitor...

Downloads

C:\Windows\AppPatch\IME\kbjhost.exe

Filesize
87KB

MD5
c6db2379392ecefec36c546ae3ca6fee

SHA1
34be5fe7cd88bfc15702e086b30198f8c5290aa6

SHA256
fb9ede31e6fc9ee22c3702b240eb89a1773427c6a9785ac62f816c488c1c755c

SHA512
760f25df75e5c4c451cd419131a04413f175c27eb0789aa0fee73482394a00f1ea60adbe183c7b3dcc6ab7f4f32952d2194da2b5cf0ae035677425ff2f4f32cc

Download Submit
memory/1620-8-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1620-12-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/1620-18-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/1620-19-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/1620-20-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1620-22-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/1620-30-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/1792-0-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download
memory/1792-1-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/1792-4-0x0000000010000000-0x000000001000E000-memory.dmp

Filesize
56KB

Download
memory/1792-15-0x0000000000400000-0x000000000040D000-memory.dmp

Filesize
52KB

Download

Analysis

Sharing