ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2

General

Target

ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe
Size

228KB
MD5

a2210286de69f28dcf7ac80a008b7b30
SHA1

2a52ecd31fd396034fc5b17652f36867ce4d1e4f
SHA256

ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2
SHA512

555c92df776c31ae2ddf8199944e0773f7d8e55f16a8c7622cc03870c6e0b7ae80350b8648ba0c347696fc06af426d1c30a362da86c19d35d263171820fc01e3
SSDEEP

6144:MvnR60RV2tZdSNVzNP6KkIR60RV2tZdSNVz:M5LVedwNd7LVedw

Score

8^/10

aspackv2 persistence upx

Malware Config

Signatures

ASPack v2.12-2.42 5 IoCs

Detects executables packed with ASPack v2.12-2.42

aspackv2

resource	yara_rule
behavioral1/files/0x000500000000b2d2-56.dat	aspack_v212_v242
behavioral1/files/0x000500000000b2d2-58.dat	aspack_v212_v242
behavioral1/files/0x000900000001231c-60.dat	aspack_v212_v242
behavioral1/files/0x000a000000012307-68.dat	aspack_v212_v242
behavioral1/files/0x000a000000012307-69.dat	aspack_v212_v242

Executes dropped EXE 1 IoCs

pid	Process
856	53d538cc.exe

Sets DLL path for service in the registry 2 TTPs 1 IoCs

persistence

Registry Run Keys / Startup Folder

T1060

Modify Registry

T1112

description	ioc	Process
Set value (str)	\REGISTRY\MACHINE\SYSTEM\ControlSet001\services\FastUserSwitchingCompatibility\Parameters\ServiceDll = "C:\\Windows\\system32\\FastUserSwitchingCompatibility.dll"	53d538cc.exe

UPX packed file 9 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000500000000b2d2-56.dat	upx
behavioral1/files/0x000500000000b2d2-58.dat	upx
behavioral1/memory/856-59-0x0000000000D00000-0x0000000000D24000-memory.dmp	upx
behavioral1/files/0x000900000001231c-60.dat	upx
behavioral1/memory/856-65-0x0000000000D00000-0x0000000000D24000-memory.dmp	upx
behavioral1/files/0x000a000000012307-68.dat	upx
behavioral1/files/0x000a000000012307-69.dat	upx
behavioral1/memory/1100-71-0x0000000074EF0000-0x0000000074F14000-memory.dmp	upx
behavioral1/memory/1100-73-0x0000000074EF0000-0x0000000074F14000-memory.dmp	upx

Loads dropped DLL 2 IoCs

pid	Process
856	53d538cc.exe
1100	Svchost.exe

Drops file in System32 directory 2 IoCs

description	ioc	Process
File opened for modification	C:\Windows\SysWOW64\114B04A8.tmp	53d538cc.exe
File opened for modification	C:\Windows\SysWOW64\FastUserSwitchingCompatibility.dll	53d538cc.exe

Program crash 1 IoCs

pid	pid_target	Process	procid_target
1072	620	WerFault.exe	26

Suspicious behavior: EnumeratesProcesses 1 IoCs

pid	Process
856	53d538cc.exe

Suspicious use of WriteProcessMemory 14 IoCs

description	pid	Process	procid_target
PID 620 wrote to memory of 856	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	27
PID 620 wrote to memory of 856	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	27
PID 620 wrote to memory of 856	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	27
PID 620 wrote to memory of 856	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	27
PID 620 wrote to memory of 856	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	27
PID 620 wrote to memory of 856	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	27
PID 620 wrote to memory of 856	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	27
PID 620 wrote to memory of 1072	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	29
PID 620 wrote to memory of 1072	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	29
PID 620 wrote to memory of 1072	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	29
PID 620 wrote to memory of 1072	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	29
PID 620 wrote to memory of 1072	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	29
PID 620 wrote to memory of 1072	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	29
PID 620 wrote to memory of 1072	620	ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe	29

C:\Users\Admin\AppData\Local\Temp\ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe
"C:\Users\Admin\AppData\Local\Temp\ec6db9498a042427a02922defd858f55e092de676b1e7f1ef90900168d14f8c2.exe"
1⤵
- Suspicious use of WriteProcessMemory
PID:620
- C:\53d538cc.exe
  C:\53d538cc.exe
  2⤵
  - Executes dropped EXE
  - Sets DLL path for service in the registry
  - Loads dropped DLL
  - Drops file in System32 directory
  - Suspicious behavior: EnumeratesProcesses
  PID:856
- C:\Windows\SysWOW64\WerFault.exe
  C:\Windows\SysWOW64\WerFault.exe -u -p 620 -s 256
  2⤵
  - Program crash
  PID:1072

C:\Windows\SysWOW64\Svchost.exe
C:\Windows\SysWOW64\Svchost.exe -k netsvcs
1⤵
- Loads dropped DLL
PID:1100

Network

MITRE ATT&CK Enterprise 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

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\53d538cc.exe

Filesize
79KB

MD5
9edd836f73a5aa1b844865a3b98814f9

SHA1
23ca95f159ddb968fb1c6f239f6d9fbcbc92efce

SHA256
18d783fecdedc087596077e9cbb242ead86266a44fa362f8712af71bb6a20388

SHA512
c2600d1cd2bb1c0f61fa1072694f6ccc0a8a182383911363b7333a82b42edf5e2999c3e4f0766fd345e0ff336b64c59f0b2a47d5736938ed3467f6b334e42731

Download Submit
C:\53d538cc.exe

Filesize
79KB

MD5
9edd836f73a5aa1b844865a3b98814f9

SHA1
23ca95f159ddb968fb1c6f239f6d9fbcbc92efce

SHA256
18d783fecdedc087596077e9cbb242ead86266a44fa362f8712af71bb6a20388

SHA512
c2600d1cd2bb1c0f61fa1072694f6ccc0a8a182383911363b7333a82b42edf5e2999c3e4f0766fd345e0ff336b64c59f0b2a47d5736938ed3467f6b334e42731

Download Submit
C:\Users\Infotmp.txt

Filesize
720B

MD5
f537b0175a36eee7ac99d1749baf9de5

SHA1
43b7fa96121c411a60c7b64a6be11d3d2e354bea

SHA256
f82136c1baa8477f96cf13db95ced38c9a6b2adda812e84bf3a72b17ae79bd9a

SHA512
c2a3bd4e5ba6feb6b3dc22c8d7a18b9464cfc2c4ff06e1b798e58fcdbd44ad0d00b0c060aa6047b41699600bbe3222b8de353ef6fe8b448d9a175c54397b36ae

Download Submit
\??\c:\windows\SysWOW64\fastuserswitchingcompatibility.dll

Filesize
79KB

MD5
8428a8d94dca536c2d3533d87f48c164

SHA1
d26e83a55bd507a35ab7a4d732160c24d68b56a3

SHA256
0279bc6ad6f3f6f20266eabde3718c85aa3c80a3cd647f1bb05f2640ebfebdb9

SHA512
0cd2f8465ff4222b22f791d71aa07b1ce97d9c430b2ae77de0de04f2aef42dd69545a90914c6a5c2bda4c775ee6523396dd4c49987b4dd9c2e4e98156a66fa35

Download Submit
\Windows\SysWOW64\114B04A8.tmp

Filesize
79KB

MD5
8428a8d94dca536c2d3533d87f48c164

SHA1
d26e83a55bd507a35ab7a4d732160c24d68b56a3

SHA256
0279bc6ad6f3f6f20266eabde3718c85aa3c80a3cd647f1bb05f2640ebfebdb9

SHA512
0cd2f8465ff4222b22f791d71aa07b1ce97d9c430b2ae77de0de04f2aef42dd69545a90914c6a5c2bda4c775ee6523396dd4c49987b4dd9c2e4e98156a66fa35

Download Submit
\Windows\SysWOW64\FastUserSwitchingCompatibility.dll

Filesize
79KB

MD5
8428a8d94dca536c2d3533d87f48c164

SHA1
d26e83a55bd507a35ab7a4d732160c24d68b56a3

SHA256
0279bc6ad6f3f6f20266eabde3718c85aa3c80a3cd647f1bb05f2640ebfebdb9

SHA512
0cd2f8465ff4222b22f791d71aa07b1ce97d9c430b2ae77de0de04f2aef42dd69545a90914c6a5c2bda4c775ee6523396dd4c49987b4dd9c2e4e98156a66fa35

Download Submit
memory/620-77-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/620-61-0x0000000000400000-0x0000000000439000-memory.dmp

Filesize
228KB

Download
memory/620-62-0x0000000000170000-0x00000000001A9000-memory.dmp

Filesize
228KB

Download
memory/620-63-0x0000000000180000-0x00000000001A4000-memory.dmp

Filesize
144KB

Download
memory/620-64-0x0000000000180000-0x00000000001A4000-memory.dmp

Filesize
144KB

Download
memory/620-54-0x0000000075711000-0x0000000075713000-memory.dmp

Filesize
8KB

Download
memory/856-65-0x0000000000D00000-0x0000000000D24000-memory.dmp

Filesize
144KB

Download
memory/856-67-0x00000000772B0000-0x0000000077310000-memory.dmp

Filesize
384KB

Download
memory/856-66-0x0000000002130000-0x0000000006130000-memory.dmp

Filesize
64.0MB

Download
memory/856-59-0x0000000000D00000-0x0000000000D24000-memory.dmp

Filesize
144KB

Download
memory/856-74-0x0000000000130000-0x000000000013D000-memory.dmp

Filesize
52KB

Download
memory/856-76-0x00000000772B0000-0x0000000077310000-memory.dmp

Filesize
384KB

Download
memory/1100-71-0x0000000074EF0000-0x0000000074F14000-memory.dmp

Filesize
144KB

Download
memory/1100-73-0x0000000074EF0000-0x0000000074F14000-memory.dmp

Filesize
144KB

Download

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