5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74

Analysis

max time kernel
119s
max time network
45s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
26-11-2022 04:29

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General

Target

5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74.exe
Size

11.3MB
MD5

875fa30d1905c84f77d40e2f7016c37c
SHA1

a64bf1cde1ae5303c743f33eb08e87f740ebf84c
SHA256

5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74
SHA512

fcb5600d282d607d0232808490331c3882635541461b4d0fd13a7a6e27d6bda8a1516a0d339f16cfdbb1ca31cf41a317f6f419f2662fb07ce7207a480c47d75f
SSDEEP

196608:i7tAGWI488V16EJvOayScJBOot4mDvXLX/XcFm066fdpGjy/CVdOOkBWX0SzjWyw:i7tAGWayIp3rDfDUaWUBpmWX0EcX

Score

9^/10

evasion upx

Malware Config

Signatures

ACProtect 1.3x - 1.4x DLL software 2 IoCs

Detects file using ACProtect software.

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\md5dll.dll	acprotect
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\md5dll.dll	acprotect

Checks for common network interception software 1 TTPs
Looks in the registry for tools like Wireshark or Fiddler commonly used to analyze network activity.
evasion

Software Discovery
T1518
Executes dropped EXE 1 IoCs

Processes:

Coffcfw.exe

pid process

1584 Coffcfw.exe

pid	process
1584	Coffcfw.exe

UPX packed file 2 IoCs

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

upx

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\md5dll.dll	upx
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\md5dll.dll	upx

Loads dropped DLL 22 IoCs

Processes:

5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74.exeCoffcfw.exeWerFault.exe

pid	process
1764	5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74.exe
1764	5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74.exe
1764	5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74.exe
1764	5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74.exe
1584	Coffcfw.exe
1584	Coffcfw.exe
1584	Coffcfw.exe
1584	Coffcfw.exe
1584	Coffcfw.exe
1584	Coffcfw.exe
1584	Coffcfw.exe
1584	Coffcfw.exe
1584	Coffcfw.exe
1584	Coffcfw.exe
1584	Coffcfw.exe
1584	Coffcfw.exe
304	WerFault.exe
304	WerFault.exe
304	WerFault.exe
304	WerFault.exe
304	WerFault.exe
304	WerFault.exe

Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s). Likely ransomware behaviour.

System Information Discovery
T1082
Program crash 1 IoCs

Processes:

WerFault.exe

pid pid_target process target process

304 1584 WerFault.exe Coffcfw.exe

pid	pid_target	process	target process
304	1584	WerFault.exe	Coffcfw.exe

NSIS installer 8 IoCs

installer

Processes:

resource	yara_rule
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe	nsis_installer_2
C:\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe	nsis_installer_2
C:\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe	nsis_installer_2
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe	nsis_installer_2
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe	nsis_installer_2
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe	nsis_installer_2
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe	nsis_installer_2
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe	nsis_installer_2

Suspicious behavior: EnumeratesProcesses 2 IoCs

Processes:

Coffcfw.exe

pid process

1584 Coffcfw.exe
1584 Coffcfw.exe

pid	process
1584	Coffcfw.exe
1584	Coffcfw.exe

Suspicious use of WriteProcessMemory 8 IoCs

Processes:

5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74.exeCoffcfw.exe

description	pid	process	target process
PID 1764 wrote to memory of 1584	1764	5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74.exe	Coffcfw.exe
PID 1764 wrote to memory of 1584	1764	5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74.exe	Coffcfw.exe
PID 1764 wrote to memory of 1584	1764	5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74.exe	Coffcfw.exe
PID 1764 wrote to memory of 1584	1764	5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74.exe	Coffcfw.exe
PID 1584 wrote to memory of 304	1584	Coffcfw.exe	WerFault.exe
PID 1584 wrote to memory of 304	1584	Coffcfw.exe	WerFault.exe
PID 1584 wrote to memory of 304	1584	Coffcfw.exe	WerFault.exe
PID 1584 wrote to memory of 304	1584	Coffcfw.exe	WerFault.exe

C:\Users\Admin\AppData\Local\Temp\5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74.exe
"C:\Users\Admin\AppData\Local\Temp\5a6a23d3873ff3423a4d2def6d02d9a177092082b277e7a003b5e99b7d957b74.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1764

C:\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe
"C:\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe"
2⤵
- Executes dropped EXE
- Loads dropped DLL
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of WriteProcessMemory
PID:1584

C:\Windows\SysWOW64\WerFault.exe
C:\Windows\SysWOW64\WerFault.exe -u -p 1584 -s 568
3⤵
- Loads dropped DLL
- Program crash
PID:304

MITRE ATT&CK Matrix ATT&CK v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Software Discovery

T1518

System Information Discovery

T1082

Lateral Movement

Collection

Exfiltration

Command and Control

Impact

Replay Monitor

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Downloads

C:\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe
Filesize
11.2MB

MD5
4cd62d2286dbc6143c4dd034b29f4171

SHA1
eac59eff62109ca723e40af1596a3acd89780c7c

SHA256
0167ca86613ba081046223f9b69b1e728a60879dfbb1420df411d767d40972ed

SHA512
2ab54128d8c9880a6f54041b437687ca335a63eaac6baa3c5915711007b369679e8e6d6e17d7d4161d188b0683e409748ff4f891cf3e058c397da8e6d717515f

Download Submit
C:\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe
Filesize
11.2MB

MD5
4cd62d2286dbc6143c4dd034b29f4171

SHA1
eac59eff62109ca723e40af1596a3acd89780c7c

SHA256
0167ca86613ba081046223f9b69b1e728a60879dfbb1420df411d767d40972ed

SHA512
2ab54128d8c9880a6f54041b437687ca335a63eaac6baa3c5915711007b369679e8e6d6e17d7d4161d188b0683e409748ff4f891cf3e058c397da8e6d717515f

Download Submit
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe
Filesize
11.2MB

MD5
4cd62d2286dbc6143c4dd034b29f4171

SHA1
eac59eff62109ca723e40af1596a3acd89780c7c

SHA256
0167ca86613ba081046223f9b69b1e728a60879dfbb1420df411d767d40972ed

SHA512
2ab54128d8c9880a6f54041b437687ca335a63eaac6baa3c5915711007b369679e8e6d6e17d7d4161d188b0683e409748ff4f891cf3e058c397da8e6d717515f

Download Submit
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe
Filesize
11.2MB

MD5
4cd62d2286dbc6143c4dd034b29f4171

SHA1
eac59eff62109ca723e40af1596a3acd89780c7c

SHA256
0167ca86613ba081046223f9b69b1e728a60879dfbb1420df411d767d40972ed

SHA512
2ab54128d8c9880a6f54041b437687ca335a63eaac6baa3c5915711007b369679e8e6d6e17d7d4161d188b0683e409748ff4f891cf3e058c397da8e6d717515f

Download Submit
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe
Filesize
11.2MB

MD5
4cd62d2286dbc6143c4dd034b29f4171

SHA1
eac59eff62109ca723e40af1596a3acd89780c7c

SHA256
0167ca86613ba081046223f9b69b1e728a60879dfbb1420df411d767d40972ed

SHA512
2ab54128d8c9880a6f54041b437687ca335a63eaac6baa3c5915711007b369679e8e6d6e17d7d4161d188b0683e409748ff4f891cf3e058c397da8e6d717515f

Download Submit
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe
Filesize
11.2MB

MD5
4cd62d2286dbc6143c4dd034b29f4171

SHA1
eac59eff62109ca723e40af1596a3acd89780c7c

SHA256
0167ca86613ba081046223f9b69b1e728a60879dfbb1420df411d767d40972ed

SHA512
2ab54128d8c9880a6f54041b437687ca335a63eaac6baa3c5915711007b369679e8e6d6e17d7d4161d188b0683e409748ff4f891cf3e058c397da8e6d717515f

Download Submit
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe
Filesize
11.2MB

MD5
4cd62d2286dbc6143c4dd034b29f4171

SHA1
eac59eff62109ca723e40af1596a3acd89780c7c

SHA256
0167ca86613ba081046223f9b69b1e728a60879dfbb1420df411d767d40972ed

SHA512
2ab54128d8c9880a6f54041b437687ca335a63eaac6baa3c5915711007b369679e8e6d6e17d7d4161d188b0683e409748ff4f891cf3e058c397da8e6d717515f

Download Submit
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\Coffcfw.exe
Filesize
11.2MB

MD5
4cd62d2286dbc6143c4dd034b29f4171

SHA1
eac59eff62109ca723e40af1596a3acd89780c7c

SHA256
0167ca86613ba081046223f9b69b1e728a60879dfbb1420df411d767d40972ed

SHA512
2ab54128d8c9880a6f54041b437687ca335a63eaac6baa3c5915711007b369679e8e6d6e17d7d4161d188b0683e409748ff4f891cf3e058c397da8e6d717515f

Download Submit
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\StdUtils.dll
Filesize
14KB

MD5
21010df9bc37daffcc0b5ae190381d85

SHA1
a8ba022aafc1233894db29e40e569dfc8b280eb9

SHA256
0ebd62de633fa108cf18139be6778fa560680f9f8a755e41c6ab544ab8db5c16

SHA512
95d3dbba6eac144260d5fcc7fcd5fb3afcb59ae62bd2eafc5a1d2190e9b44f8e125290d62fef82ad8799d0072997c57b2fa8a643aba554d0a82bbd3f8eb1403e

Download Submit
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\System.dll
Filesize
11KB

MD5
00a0194c20ee912257df53bfe258ee4a

SHA1
d7b4e319bc5119024690dc8230b9cc919b1b86b2

SHA256
dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3

SHA512
3b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667

Download Submit
\Users\Admin\AppData\Local\Temp\nso8AA5.tmp\WrapperUtils.dll
Filesize
58KB

MD5
1e9d41ffc9c3b401a6fa8bb23fb77665

SHA1
030dd7f859ee9e88e83e75ddbb39dc491f1440bc

SHA256
453f2e8b0d5960e1bf1325ac6ca8c9f578b8fbc231394ec5b0531f3a92b6e75d

SHA512
dbbc280bbf5a3bd74dcc1e6144ad04c32b0217073969ccfbd41c1290664302bdbba288569c52646489648cc3bc0a6da9fbfd26af8ee98be259606176c90a6eb8

Download Submit
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\InstallerUtils.dll
Filesize
809KB

MD5
af0c3741cbbb2c85334a196dea846b6e

SHA1
106673bc8808ad4e1c285cbd710cf45e70569604

SHA256
0a70dfbc1eb903ae48fec36bdb308cd8a317e0fcbb2bc7a83685075ea8494d90

SHA512
32de1c2bf0d776df02ef253982a23697f2d49580b2425d07a80221a40637af5d2fb5043062bc6d05c55c858eae1cc51d256f8cf9687a0f03d180a7e9b1cfbadf

Download Submit
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\InstallerUtils.dll
Filesize
809KB

MD5
af0c3741cbbb2c85334a196dea846b6e

SHA1
106673bc8808ad4e1c285cbd710cf45e70569604

SHA256
0a70dfbc1eb903ae48fec36bdb308cd8a317e0fcbb2bc7a83685075ea8494d90

SHA512
32de1c2bf0d776df02ef253982a23697f2d49580b2425d07a80221a40637af5d2fb5043062bc6d05c55c858eae1cc51d256f8cf9687a0f03d180a7e9b1cfbadf

Download Submit
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\InstallerUtils.dll
Filesize
809KB

MD5
af0c3741cbbb2c85334a196dea846b6e

SHA1
106673bc8808ad4e1c285cbd710cf45e70569604

SHA256
0a70dfbc1eb903ae48fec36bdb308cd8a317e0fcbb2bc7a83685075ea8494d90

SHA512
32de1c2bf0d776df02ef253982a23697f2d49580b2425d07a80221a40637af5d2fb5043062bc6d05c55c858eae1cc51d256f8cf9687a0f03d180a7e9b1cfbadf

Download Submit
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\InstallerUtils.dll
Filesize
809KB

MD5
af0c3741cbbb2c85334a196dea846b6e

SHA1
106673bc8808ad4e1c285cbd710cf45e70569604

SHA256
0a70dfbc1eb903ae48fec36bdb308cd8a317e0fcbb2bc7a83685075ea8494d90

SHA512
32de1c2bf0d776df02ef253982a23697f2d49580b2425d07a80221a40637af5d2fb5043062bc6d05c55c858eae1cc51d256f8cf9687a0f03d180a7e9b1cfbadf

Download Submit
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\InstallerUtils.dll
Filesize
809KB

MD5
af0c3741cbbb2c85334a196dea846b6e

SHA1
106673bc8808ad4e1c285cbd710cf45e70569604

SHA256
0a70dfbc1eb903ae48fec36bdb308cd8a317e0fcbb2bc7a83685075ea8494d90

SHA512
32de1c2bf0d776df02ef253982a23697f2d49580b2425d07a80221a40637af5d2fb5043062bc6d05c55c858eae1cc51d256f8cf9687a0f03d180a7e9b1cfbadf

Download Submit
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\InstallerUtils.dll
Filesize
809KB

MD5
af0c3741cbbb2c85334a196dea846b6e

SHA1
106673bc8808ad4e1c285cbd710cf45e70569604

SHA256
0a70dfbc1eb903ae48fec36bdb308cd8a317e0fcbb2bc7a83685075ea8494d90

SHA512
32de1c2bf0d776df02ef253982a23697f2d49580b2425d07a80221a40637af5d2fb5043062bc6d05c55c858eae1cc51d256f8cf9687a0f03d180a7e9b1cfbadf

Download Submit
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\InstallerUtils2.dll
Filesize
107KB

MD5
77553fbe359e3ab3500f1d7425673ec2

SHA1
4da3c1a09a835dd300e304448bfd4237086e5cb4

SHA256
f99f37546ec9a26bc7483f473cf95a6f569db74865063847433b85eaa062dc6f

SHA512
0f44d88090b9d3e4727eb2049b60a3fe71106caeb88a8dcba353ae7c6e0e15432c1ea584101c1beaec231366f9932ee159d0a3f55354bac0cf3368d7cf5bd00e

Download Submit
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\StdUtils.dll
Filesize
14KB

MD5
21010df9bc37daffcc0b5ae190381d85

SHA1
a8ba022aafc1233894db29e40e569dfc8b280eb9

SHA256
0ebd62de633fa108cf18139be6778fa560680f9f8a755e41c6ab544ab8db5c16

SHA512
95d3dbba6eac144260d5fcc7fcd5fb3afcb59ae62bd2eafc5a1d2190e9b44f8e125290d62fef82ad8799d0072997c57b2fa8a643aba554d0a82bbd3f8eb1403e

Download Submit
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\System.dll
Filesize
11KB

MD5
00a0194c20ee912257df53bfe258ee4a

SHA1
d7b4e319bc5119024690dc8230b9cc919b1b86b2

SHA256
dc4da2ccadb11099076926b02764b2b44ad8f97cd32337421a4cc21a3f5448f3

SHA512
3b38a2c17996c3b77ebf7b858a6c37415615e756792132878d8eddbd13cb06710b7da0e8b58104768f8e475fc93e8b44b3b1ab6f70ddf52edee111aaf5ef5667

Download Submit
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\UserInfo.dll
Filesize
4KB

MD5
7579ade7ae1747a31960a228ce02e666

SHA1
8ec8571a296737e819dcf86353a43fcf8ec63351

SHA256
564c80dec62d76c53497c40094db360ff8a36e0dc1bda8383d0f9583138997f5

SHA512
a88bc56e938374c333b0e33cb72951635b5d5a98b9cb2d6785073cbcad23bf4c0f9f69d3b7e87b46c76eb03ced9bb786844ce87656a9e3df4ca24acf43d7a05b

Download Submit
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\md5dll.dll
Filesize
6KB

MD5
0745ff646f5af1f1cdd784c06f40fce9

SHA1
bf7eba06020d7154ce4e35f696bec6e6c966287f

SHA256
fbed2f1160469f42ce97c33ad558201b2b43e3020257f9b2259e3ce295317a70

SHA512
8d31627c719e788b5d0f5f34d4cb175989eaa35aa3335c98f2ba7902c8ae01b23de3ccb9c6eb95945f0b08ef74d456f9f22ca7539df303e1df3f6a7e67b358da

Download Submit
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\md5dll.dll
Filesize
6KB

MD5
0745ff646f5af1f1cdd784c06f40fce9

SHA1
bf7eba06020d7154ce4e35f696bec6e6c966287f

SHA256
fbed2f1160469f42ce97c33ad558201b2b43e3020257f9b2259e3ce295317a70

SHA512
8d31627c719e788b5d0f5f34d4cb175989eaa35aa3335c98f2ba7902c8ae01b23de3ccb9c6eb95945f0b08ef74d456f9f22ca7539df303e1df3f6a7e67b358da

Download Submit
\Users\Admin\AppData\Local\Temp\nsyBE62.tmp\nsisos.dll
Filesize
5KB

MD5
69806691d649ef1c8703fd9e29231d44

SHA1
e2193fcf5b4863605eec2a5eb17bf84c7ac00166

SHA256
ba79ab7f63f02ed5d5d46b82b11d97dac5b7ef7e9b9a4df926b43ceac18483b6

SHA512
5e5e0319e701d15134a01cb6472c624e271e99891058aef4dfe779c29c73899771a5b6f8b1cd61b543a3b3defeaecaa080c9cc4e76e84038ca08e12084f128eb

Download Submit
memory/304-75-0x0000000000000000-mapping.dmp

Download
memory/1584-82-0x00000000013E0000-0x00000000013E9000-memory.dmp

Filesize
36KB

Download
memory/1584-81-0x00000000013E0000-0x00000000013E9000-memory.dmp

Filesize
36KB

Download
memory/1584-59-0x0000000000000000-mapping.dmp

Download
memory/1584-84-0x00000000013E0000-0x00000000013E9000-memory.dmp

Filesize
36KB

Download
memory/1584-85-0x00000000013E0000-0x00000000013E9000-memory.dmp

Filesize
36KB

Download
memory/1764-54-0x00000000758C1000-0x00000000758C3000-memory.dmp

Filesize
8KB

Download

Analysis

Sharing

General

Malware Config

Signatures

Processes

Network

MITRE ATT&CK Matrix ATT&CK v6

Replay Monitor

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Downloads