9acfb28d547a7ea9056340cc9f2f9eeaccbece3dfbfbc2831a2c2126af353bd9

Analysis

max time kernel
141s
max time network
127s
platform
windows7_x64
resource
win7-20231020-en
resource tags

arch:x64arch:x86image:win7-20231020-enlocale:en-usos:windows7-x64system
submitted
31/10/2023, 08:50

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General

Target

NEAS.0f929978f66fb505ee77333a748ca550.exe
Size

181KB
MD5

0f929978f66fb505ee77333a748ca550
SHA1

83aef5af782148f617db278351337c9d73420336
SHA256

9acfb28d547a7ea9056340cc9f2f9eeaccbece3dfbfbc2831a2c2126af353bd9
SHA512

bd49d888f46d191ce063e2f97eb836094ccbe549c43ffa34c11a50752e9a9ca94dd882f5d87d5522ba51f0a949caa31f1ae182de32ffddfff41117bafecb32b8
SSDEEP

3072:M1abGWGT2TK1dbzlF9OVtSZjCw8geIr/QAuCgNVfpxICuQsKUIZn:9bpGtfoVtScw2RCgrzItQB

Score

7^/10

persistence upx

Malware Config

Signatures

Executes dropped EXE 1 IoCs

pid	Process
1628	XKTBS.EXE

Loads dropped DLL 2 IoCs

pid	Process
2696	NEAS.0f929978f66fb505ee77333a748ca550.exe
2696	NEAS.0f929978f66fb505ee77333a748ca550.exe

Modifies system executable filetype association 2 TTPs 2 IoCs

persistence

Modify Registry

T1112

Change Default File Association

T1546.001

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	XKTBS.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\PerfLogs\\HOY.EXE \"%1\" %*"	XKTBS.EXE

UPX packed file 21 IoCs

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

upx

resource	yara_rule
behavioral1/memory/2696-0-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/files/0x0007000000016d39-12.dat	upx
behavioral1/files/0x000e00000001201d-22.dat	upx
behavioral1/files/0x000e00000001201d-20.dat	upx
behavioral1/memory/1628-28-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/files/0x000e00000001201d-27.dat	upx
behavioral1/memory/2696-30-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-32-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-33-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/files/0x000e00000001201d-34.dat	upx
behavioral1/memory/1628-38-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-39-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-40-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-41-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-42-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-44-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-45-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-46-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-47-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-48-0x0000000000400000-0x000000000046E000-memory.dmp	upx
behavioral1/memory/1628-49-0x0000000000400000-0x000000000046E000-memory.dmp	upx

Adds Run key to start application 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1547.001

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\TAZFAI.EXE = "C:\\Users\\TAZFAI.EXE"	NEAS.0f929978f66fb505ee77333a748ca550.exe

Enumerates connected drives 3 TTPs 34 IoCs

Attempts to read the root path of hard drives other than the default C: drive.

Query Registry

T1012

Peripheral Device Discovery

T1120

System Information Discovery

T1082

description	ioc	Process
File opened (read-only)	\??\G:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\T:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\H:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\R:	XKTBS.EXE
File opened (read-only)	\??\G:	XKTBS.EXE
File opened (read-only)	\??\L:	XKTBS.EXE
File opened (read-only)	\??\M:	XKTBS.EXE
File opened (read-only)	\??\N:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\P:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\R:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\N:	XKTBS.EXE
File opened (read-only)	\??\S:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\U:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\E:	XKTBS.EXE
File opened (read-only)	\??\U:	XKTBS.EXE
File opened (read-only)	\??\V:	XKTBS.EXE
File opened (read-only)	\??\J:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\I:	XKTBS.EXE
File opened (read-only)	\??\T:	XKTBS.EXE
File opened (read-only)	\??\O:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\Q:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\J:	XKTBS.EXE
File opened (read-only)	\??\P:	XKTBS.EXE
File opened (read-only)	\??\E:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\K:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\M:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\O:	XKTBS.EXE
File opened (read-only)	\??\S:	XKTBS.EXE
File opened (read-only)	\??\I:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\H:	XKTBS.EXE
File opened (read-only)	\??\K:	XKTBS.EXE
File opened (read-only)	\??\L:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\V:	NEAS.0f929978f66fb505ee77333a748ca550.exe
File opened (read-only)	\??\Q:	XKTBS.EXE

Drops file in Program Files directory 1 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\XKTBS.EXE	NEAS.0f929978f66fb505ee77333a748ca550.exe

Drops file in Windows directory 1 IoCs

description	ioc	Process
File created	C:\Windows\EWWLBDA.EXE	NEAS.0f929978f66fb505ee77333a748ca550.exe

Modifies registry class 17 IoCs

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQfile\shell\open\command\ = "C:\\PerfLogs\\IXYF.EXE \"%1\""	NEAS.0f929978f66fb505ee77333a748ca550.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQfile\shell\open\command\ = "C:\\PerfLogs\\IXYF.EXE \"%1\" %*"	NEAS.0f929978f66fb505ee77333a748ca550.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command	XKTBS.EXE
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command	NEAS.0f929978f66fb505ee77333a748ca550.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQ.file\shell	NEAS.0f929978f66fb505ee77333a748ca550.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQ.file\shell\open\command\ = "C:\\PerfLogs\\IXYF.EXE %1"	NEAS.0f929978f66fb505ee77333a748ca550.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQfile\shell	NEAS.0f929978f66fb505ee77333a748ca550.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\inffile\shell\open\command	NEAS.0f929978f66fb505ee77333a748ca550.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\exefile\shell\open\command\ = "C:\\PerfLogs\\HOY.EXE \"%1\" %*"	XKTBS.EXE
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\inffile\shell\open\command\ = "C:\\PerfLogs\\IXYF.EXE %1"	NEAS.0f929978f66fb505ee77333a748ca550.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQ.file\shell\open\command	NEAS.0f929978f66fb505ee77333a748ca550.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQ.file	NEAS.0f929978f66fb505ee77333a748ca550.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQ.file\shell\open	NEAS.0f929978f66fb505ee77333a748ca550.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQfile\shell\open	NEAS.0f929978f66fb505ee77333a748ca550.exe
Set value (str)	\REGISTRY\MACHINE\SOFTWARE\Classes\txtfile\shell\open\command\ = "C:\\Users\\BLUVYE.EXE %1"	NEAS.0f929978f66fb505ee77333a748ca550.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQfile\shell\open\command	NEAS.0f929978f66fb505ee77333a748ca550.exe
Key created	\REGISTRY\MACHINE\SOFTWARE\Classes\QQQfile	NEAS.0f929978f66fb505ee77333a748ca550.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
1628	XKTBS.EXE

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 2696 wrote to memory of 1628	2696	NEAS.0f929978f66fb505ee77333a748ca550.exe	28
PID 2696 wrote to memory of 1628	2696	NEAS.0f929978f66fb505ee77333a748ca550.exe	28
PID 2696 wrote to memory of 1628	2696	NEAS.0f929978f66fb505ee77333a748ca550.exe	28
PID 2696 wrote to memory of 1628	2696	NEAS.0f929978f66fb505ee77333a748ca550.exe	28

C:\Users\Admin\AppData\Local\Temp\NEAS.0f929978f66fb505ee77333a748ca550.exe
"C:\Users\Admin\AppData\Local\Temp\NEAS.0f929978f66fb505ee77333a748ca550.exe"
1⤵
- Loads dropped DLL
- Adds Run key to start application
- Enumerates connected drives
- Drops file in Program Files directory
- Drops file in Windows directory
- Modifies registry class
- Suspicious use of WriteProcessMemory
PID:2696
- C:\Program Files (x86)\XKTBS.EXE
  "C:\Program Files (x86)\XKTBS.EXE"
  2⤵
  - Executes dropped EXE
  - Modifies system executable filetype association
  - Enumerates connected drives
  - Modifies registry class
  - Suspicious behavior: GetForegroundWindowSpam
  PID:1628

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

Change Default File Association

T1546.001

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\PerfLogs\IXYF.EXE

Filesize
181KB

MD5
82c4643138bc901afc5c460cc738865b

SHA1
3e5834f912124866422bb7fff6ce3a64dd038114

SHA256
dc0d90bfd1097c95478a412750315e34b867a74c7d033b9e295f27b3093d2f2b

SHA512
39b86c4aa2e0a02f6da0d9b4d78426c4d026fd20ca959b8b25a41e34e57361547433293bb1e450762406d71c8f336ec2932a408e314fe9b0717ae995ab078578

Download Submit
C:\Program Files (x86)\XKTBS.EXE

Filesize
182KB

MD5
3789324de5dbe05d27abf40191acfa12

SHA1
46515147ed80d79c046c04f55bef88dab374565b

SHA256
ceb63e92f91bce0afe819583d85bd400b8dc1eaee672ff375ee798815a4011c1

SHA512
b695c45806ca2d7b10ff3e31c5553c3938d786a99658f423b87b69e4291fcd1be16982e2e50304144f16f5071f8ee4b02305d36dce1fca9eb13f14a5e233a47b

Download Submit
C:\Program Files (x86)\XKTBS.EXE

Filesize
182KB

MD5
3789324de5dbe05d27abf40191acfa12

SHA1
46515147ed80d79c046c04f55bef88dab374565b

SHA256
ceb63e92f91bce0afe819583d85bd400b8dc1eaee672ff375ee798815a4011c1

SHA512
b695c45806ca2d7b10ff3e31c5553c3938d786a99658f423b87b69e4291fcd1be16982e2e50304144f16f5071f8ee4b02305d36dce1fca9eb13f14a5e233a47b

Download Submit
\??\c:\filedebug

Filesize
231B

MD5
c67186cb947e62e9e7bff7ccdac66cd1

SHA1
adbc18d5c3d1bf0ce2f88509ab2659881809f35b

SHA256
8062201ab597475916afc5dc4e6a3b88ac9f55717aa5be58885ef6ac7c781923

SHA512
33fe30228d9797258a8c3342bd9e812f26577a6ddbea5b4cd28277e6afdaf43dac6506a330fe1ffe443a63a68b0ffbd82bba867bbb4777347ed5d95fe849be30

Download Submit
\Program Files (x86)\XKTBS.EXE

Filesize
182KB

MD5
3789324de5dbe05d27abf40191acfa12

SHA1
46515147ed80d79c046c04f55bef88dab374565b

SHA256
ceb63e92f91bce0afe819583d85bd400b8dc1eaee672ff375ee798815a4011c1

SHA512
b695c45806ca2d7b10ff3e31c5553c3938d786a99658f423b87b69e4291fcd1be16982e2e50304144f16f5071f8ee4b02305d36dce1fca9eb13f14a5e233a47b

Download Submit
\Program Files (x86)\XKTBS.EXE

Filesize
182KB

MD5
3789324de5dbe05d27abf40191acfa12

SHA1
46515147ed80d79c046c04f55bef88dab374565b

SHA256
ceb63e92f91bce0afe819583d85bd400b8dc1eaee672ff375ee798815a4011c1

SHA512
b695c45806ca2d7b10ff3e31c5553c3938d786a99658f423b87b69e4291fcd1be16982e2e50304144f16f5071f8ee4b02305d36dce1fca9eb13f14a5e233a47b

Download Submit
memory/1628-33-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-38-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-29-0x0000000000220000-0x0000000000221000-memory.dmp

Filesize
4KB

Download
memory/1628-49-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-48-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-32-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-47-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-46-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-45-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-28-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-39-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-40-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-41-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-42-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/1628-44-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2696-1-0x00000000001B0000-0x00000000001B1000-memory.dmp

Filesize
4KB

Download
memory/2696-26-0x00000000029A0000-0x0000000002A0E000-memory.dmp

Filesize
440KB

Download
memory/2696-0-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download
memory/2696-31-0x00000000029A0000-0x0000000002A0E000-memory.dmp

Filesize
440KB

Download
memory/2696-30-0x0000000000400000-0x000000000046E000-memory.dmp

Filesize
440KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Enterprise v15

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Downloads