9c2e7d6cccb7b5d85379e7b63c2f8bf44266cff4e4a58962e457efe88083f05e

General

Target

9c2e7d6cccb7b5d85379e7b63c2f8bf44266cff4e4a58962e457efe88083f05e.exe
Size

292KB
MD5

903e8c5bf28636d0602befba944d7cf7
SHA1

2faae8398baf5ca9cca17fc12ca9e0cbeda240e9
SHA256

9c2e7d6cccb7b5d85379e7b63c2f8bf44266cff4e4a58962e457efe88083f05e
SHA512

db432e7dfbc6d25be3f90ebc6a2d210ce6c683bf5236a895602c82ac0f7081d8be458d9edf077fa050abafdbdfb2f70775b89abee2044a8e6ce0765abaabc32f
SSDEEP

6144:sN+HTr4epupV3/4YIJ8m1MxUyRzoVOBlYQflIGw:sNgrZeP4BJTM6++OBlYERw

Score

8^/10

aspackv2 persistence upx

Malware Config

Signatures

ASPack v2.12-2.42 6 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

Processes:

resource	yara_rule
C:\31d4559e.exe	aspack_v212_v242
C:\31d4559e.exe	aspack_v212_v242
\??\c:\windows\SysWOW64\fastuserswitchingcompatibility.dll	aspack_v212_v242
\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	aspack_v212_v242
\??\c:\windows\SysWOW64\irmon.dll	aspack_v212_v242
\Windows\SysWOW64\Irmon.dll	aspack_v212_v242

Executes dropped EXE 1 IoCs

Processes:

31d4559e.exe

pid process

872 31d4559e.exe

pid	process
872	31d4559e.exe

Sets DLL path for service in the registry 2 TTPs 3 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

Processes:

31d4559e.exe

description	ioc	process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\FastUserSwitchingCompatibility.dll"	31d4559e.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Ias\Parameters\ServiceDll = "C:\\Windows\\system32\\Ias.dll"	31d4559e.exe
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\Irmon\Parameters\ServiceDll = "C:\\Windows\\system32\\Irmon.dll"	31d4559e.exe

UPX packed file 18 IoCs

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

upx

Processes:

resource	yara_rule
C:\31d4559e.exe	upx
behavioral1/memory/936-57-0x0000000000400000-0x0000000000460000-memory.dmp	upx
behavioral1/memory/872-60-0x00000000009E0000-0x0000000000A2E000-memory.dmp	upx
C:\31d4559e.exe	upx
behavioral1/memory/872-63-0x00000000009E0000-0x0000000000A2E000-memory.dmp	upx
behavioral1/memory/872-64-0x00000000009E0000-0x0000000000A2E000-memory.dmp	upx
\??\c:\windows\SysWOW64\fastuserswitchingcompatibility.dll	upx
\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	upx
behavioral1/memory/1544-71-0x0000000074580000-0x00000000745CE000-memory.dmp	upx
behavioral1/memory/1544-72-0x0000000074580000-0x00000000745CE000-memory.dmp	upx
behavioral1/memory/1544-69-0x0000000074580000-0x00000000745CE000-memory.dmp	upx
behavioral1/memory/1544-73-0x0000000074580000-0x00000000745CE000-memory.dmp	upx
\??\c:\windows\SysWOW64\irmon.dll	upx
\Windows\SysWOW64\Irmon.dll	upx
behavioral1/memory/540-78-0x0000000074370000-0x00000000743BE000-memory.dmp	upx
behavioral1/memory/540-77-0x0000000074370000-0x00000000743BE000-memory.dmp	upx
behavioral1/memory/540-79-0x0000000074370000-0x00000000743BE000-memory.dmp	upx
behavioral1/memory/872-80-0x00000000009E0000-0x0000000000A2E000-memory.dmp	upx

Loads dropped DLL 2 IoCs

Processes:

svchost.exesvchost.exe

pid process

1544 svchost.exe
540 svchost.exe

pid	process
1544	svchost.exe
540	svchost.exe

Drops file in System32 directory 3 IoCs

Processes:

31d4559e.exe

description	ioc	process
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	31d4559e.exe
File opened for modification	C:\Windows\SysWOW64\Ias.dll	31d4559e.exe
File opened for modification	C:\Windows\SysWOW64\Irmon.dll	31d4559e.exe

Suspicious behavior: EnumeratesProcesses 1 IoCs

Processes:

31d4559e.exe

pid process

872 31d4559e.exe

pid	process
872	31d4559e.exe

Suspicious use of WriteProcessMemory 7 IoCs

Processes:

9c2e7d6cccb7b5d85379e7b63c2f8bf44266cff4e4a58962e457efe88083f05e.exe

description	pid	process	target process
PID 936 wrote to memory of 872	936	9c2e7d6cccb7b5d85379e7b63c2f8bf44266cff4e4a58962e457efe88083f05e.exe	31d4559e.exe
PID 936 wrote to memory of 872	936	9c2e7d6cccb7b5d85379e7b63c2f8bf44266cff4e4a58962e457efe88083f05e.exe	31d4559e.exe
PID 936 wrote to memory of 872	936	9c2e7d6cccb7b5d85379e7b63c2f8bf44266cff4e4a58962e457efe88083f05e.exe	31d4559e.exe
PID 936 wrote to memory of 872	936	9c2e7d6cccb7b5d85379e7b63c2f8bf44266cff4e4a58962e457efe88083f05e.exe	31d4559e.exe
PID 936 wrote to memory of 872	936	9c2e7d6cccb7b5d85379e7b63c2f8bf44266cff4e4a58962e457efe88083f05e.exe	31d4559e.exe
PID 936 wrote to memory of 872	936	9c2e7d6cccb7b5d85379e7b63c2f8bf44266cff4e4a58962e457efe88083f05e.exe	31d4559e.exe
PID 936 wrote to memory of 872	936	9c2e7d6cccb7b5d85379e7b63c2f8bf44266cff4e4a58962e457efe88083f05e.exe	31d4559e.exe

C:\Users\Admin\AppData\Local\Temp\9c2e7d6cccb7b5d85379e7b63c2f8bf44266cff4e4a58962e457efe88083f05e.exe
"C:\Users\Admin\AppData\Local\Temp\9c2e7d6cccb7b5d85379e7b63c2f8bf44266cff4e4a58962e457efe88083f05e.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:936

C:\31d4559e.exe
C:\31d4559e.exe
2⤵
- Executes dropped EXE
- Sets DLL path for service in the registry
- Drops file in System32 directory
- Suspicious behavior: EnumeratesProcesses
PID:872

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Loads dropped DLL
PID:1544

C:\Windows\SysWOW64\svchost.exe
C:\Windows\SysWOW64\svchost.exe -k netsvcs
1⤵
- Loads dropped DLL
PID:540

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Registry Run Keys / Startup Folder

1

T1060

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Credential Access

Discovery

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\31d4559e.exe
Filesize
240KB

MD5
f5d2a6e81cd9b23d4899371b296b8a8c

SHA1
7b095e73b522c5a1b12e26ae389464c5c123bc8e

SHA256
775082343ef68119bf9bf671c677c981b68ed6f627ff5b8b4de414e2e9d29a42

SHA512
77842aae633daac864c148fdc5d40b22cc1dc9e3e0c0e81df7694d2c6e95bfb02bc18bb34c047bbf4b12dc24d14eb1b89acf75f43f547e311fe63730b6a54662

Download Submit
C:\31d4559e.exe
Filesize
240KB

MD5
f5d2a6e81cd9b23d4899371b296b8a8c

SHA1
7b095e73b522c5a1b12e26ae389464c5c123bc8e

SHA256
775082343ef68119bf9bf671c677c981b68ed6f627ff5b8b4de414e2e9d29a42

SHA512
77842aae633daac864c148fdc5d40b22cc1dc9e3e0c0e81df7694d2c6e95bfb02bc18bb34c047bbf4b12dc24d14eb1b89acf75f43f547e311fe63730b6a54662

Download Submit
\??\c:\windows\SysWOW64\fastuserswitchingcompatibility.dll
Filesize
240KB

MD5
e48f830a89ba95daf7650bb9b05bd117

SHA1
304e6666ad4a8e0329f7aa4646c34c5fe57d19fe

SHA256
046338af97e20aaf13aa5aa3c550a139a5f41ee3f22592497ab1f9b7c82786c6

SHA512
a462bea2fedd9135dd9b226b5b20cfd8172581d03b2c06acae4018ba8fba1c1e5f2d68f7e0ff860fd9269a02e36cc6c59e33b8c02f8168cd83e674ee074b3095

Download Submit
\??\c:\windows\SysWOW64\irmon.dll
Filesize
240KB

MD5
e48f830a89ba95daf7650bb9b05bd117

SHA1
304e6666ad4a8e0329f7aa4646c34c5fe57d19fe

SHA256
046338af97e20aaf13aa5aa3c550a139a5f41ee3f22592497ab1f9b7c82786c6

SHA512
a462bea2fedd9135dd9b226b5b20cfd8172581d03b2c06acae4018ba8fba1c1e5f2d68f7e0ff860fd9269a02e36cc6c59e33b8c02f8168cd83e674ee074b3095

Download Submit
\Windows\SysWOW64\FastUserSwitchingCompatibility.dll
Filesize
240KB

MD5
e48f830a89ba95daf7650bb9b05bd117

SHA1
304e6666ad4a8e0329f7aa4646c34c5fe57d19fe

SHA256
046338af97e20aaf13aa5aa3c550a139a5f41ee3f22592497ab1f9b7c82786c6

SHA512
a462bea2fedd9135dd9b226b5b20cfd8172581d03b2c06acae4018ba8fba1c1e5f2d68f7e0ff860fd9269a02e36cc6c59e33b8c02f8168cd83e674ee074b3095

Download Submit
\Windows\SysWOW64\Irmon.dll
Filesize
240KB

MD5
e48f830a89ba95daf7650bb9b05bd117

SHA1
304e6666ad4a8e0329f7aa4646c34c5fe57d19fe

SHA256
046338af97e20aaf13aa5aa3c550a139a5f41ee3f22592497ab1f9b7c82786c6

SHA512
a462bea2fedd9135dd9b226b5b20cfd8172581d03b2c06acae4018ba8fba1c1e5f2d68f7e0ff860fd9269a02e36cc6c59e33b8c02f8168cd83e674ee074b3095

Download Submit
memory/540-79-0x0000000074370000-0x00000000743BE000-memory.dmp

Filesize
312KB

Download
memory/540-77-0x0000000074370000-0x00000000743BE000-memory.dmp

Filesize
312KB

Download
memory/540-78-0x0000000074370000-0x00000000743BE000-memory.dmp

Filesize
312KB

Download
memory/872-64-0x00000000009E0000-0x0000000000A2E000-memory.dmp

Filesize
312KB

Download
memory/872-63-0x00000000009E0000-0x0000000000A2E000-memory.dmp

Filesize
312KB

Download
memory/872-66-0x0000000002050000-0x0000000006050000-memory.dmp

Filesize
64.0MB

Download
memory/872-55-0x0000000000000000-mapping.dmp

Download
memory/872-65-0x0000000002050000-0x0000000006050000-memory.dmp

Filesize
64.0MB

Download
memory/872-80-0x00000000009E0000-0x0000000000A2E000-memory.dmp

Filesize
312KB

Download
memory/872-60-0x00000000009E0000-0x0000000000A2E000-memory.dmp

Filesize
312KB

Download
memory/936-58-0x0000000000240000-0x00000000002A0000-memory.dmp

Filesize
384KB

Download
memory/936-54-0x0000000076391000-0x0000000076393000-memory.dmp

Filesize
8KB

Download
memory/936-57-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/936-59-0x00000000009E0000-0x0000000000A2E000-memory.dmp

Filesize
312KB

Download
memory/1544-73-0x0000000074580000-0x00000000745CE000-memory.dmp

Filesize
312KB

Download
memory/1544-69-0x0000000074580000-0x00000000745CE000-memory.dmp

Filesize
312KB

Download
memory/1544-72-0x0000000074580000-0x00000000745CE000-memory.dmp

Filesize
312KB

Download
memory/1544-71-0x0000000074580000-0x00000000745CE000-memory.dmp

Filesize
312KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

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Downloads