floxif | a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7d

General

Target

a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Size

1.8MB
MD5

55493dd5e963ebd9006d80f0a69a1960
SHA1

f88578ecd01ba3d8b682a063a011168370db9092
SHA256

a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7d
SHA512

948716c7971cae4e6fd401877bd4e778aec076b30d43f7dc51aace9167ce5efa7974b9625d0befd608f54cacea789bfc8f05a39717a2bac59ab44518ebbd9e03
SSDEEP

49152:WssuwDIfwT6+W7wF6p5PVksC9mK+9T6/eLg9:WDswjW7u6pT/T6qg9

Score

10^/10

floxif backdoor discovery trojan upx

Malware Config

Signatures

Floxif family
floxif
Floxif, Floodfix
Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.
backdoor trojan floxif

Detects Floxif payload 1 IoCs

backdoor

resource	yara_rule
behavioral1/files/0x0007000000012118-1.dat	floxif

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x0007000000012118-1.dat	acprotect

Executes dropped EXE 2 IoCs

pid	Process
2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe
1180	Process not Found

Loads dropped DLL 2 IoCs

pid	Process
1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe

Enumerates connected drives 3 TTPs 1 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)	\??\e:	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe

UPX packed file 8 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x0007000000012118-1.dat	upx
behavioral1/memory/1712-3-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1712-72-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1712-76-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1712-80-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1712-84-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1712-88-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1712-92-0x0000000010000000-0x0000000010030000-memory.dmp	upx

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
File created	\??\c:\program files\common files\system\symsrv.dll.000	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe

System Location Discovery: System Language Discovery 1 TTPs 1 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	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe

Modifies system certificate store 2 TTPs 3 IoCs

defense_evasion spyware trojan

Install Root Certificate

T1553.004

Modify Registry

T1112

description	ioc	Process
Key created	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Set value (data)	\REGISTRY\MACHINE\SOFTWARE\Microsoft\SystemCertificates\AuthRoot\Certificates\D1EB23A46D17D68FD92564C2F1F1601764D8E349\Blob = 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	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe

Suspicious behavior: GetForegroundWindowSpam 1 IoCs

pid	Process
2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe

Suspicious use of AdjustPrivilegeToken 23 IoCs

description	pid	Process
Token: SeDebugPrivilege	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Token: SeRestorePrivilege	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Token: SeBackupPrivilege	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Token: SeDebugPrivilege	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Token: SeSecurityPrivilege	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Token: SeTakeOwnershipPrivilege	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Token: SeImpersonatePrivilege	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Token: SeSystemProfilePrivilege	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Token: SeShutdownPrivilege	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Token: SeIncreaseQuotaPrivilege	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Token: 35	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Token: SeManageVolumePrivilege	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
Token: SeRestorePrivilege	2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe
Token: SeBackupPrivilege	2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe
Token: SeDebugPrivilege	2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe
Token: SeSecurityPrivilege	2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe
Token: SeTakeOwnershipPrivilege	2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe
Token: SeImpersonatePrivilege	2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe
Token: SeSystemProfilePrivilege	2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe
Token: SeShutdownPrivilege	2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe
Token: SeIncreaseQuotaPrivilege	2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe
Token: 35	2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe
Token: SeManageVolumePrivilege	2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe

Suspicious use of FindShellTrayWindow 2 IoCs

pid	Process
1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
2684	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe

Suspicious use of WriteProcessMemory 4 IoCs

description	pid	Process	procid_target
PID 1712 wrote to memory of 2684	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe	31
PID 1712 wrote to memory of 2684	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe	31
PID 1712 wrote to memory of 2684	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe	31
PID 1712 wrote to memory of 2684	1712	a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe	31

C:\Users\Admin\AppData\Local\Temp\a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe
"C:\Users\Admin\AppData\Local\Temp\a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Modifies system certificate store
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of FindShellTrayWindow
- Suspicious use of WriteProcessMemory
PID:1712
- C:\Users\Admin\AppData\Local\Temp\a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe
  "C:\Users\Admin\AppData\Local\Temp\a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe"
  2⤵
  - Executes dropped EXE
  - Suspicious behavior: GetForegroundWindowSpam
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of FindShellTrayWindow
  PID:2684

Network

MITRE ATT&CK Enterprise v15

Reconnaissance

Resource Development

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Modify Registry

1

T1112

Subvert Trust Controls

1

T1553

Install Root Certificate

1

T1553.004

Credential Access

Discovery

Peripheral Device Discovery

Query Registry

System Information Discovery

1

T1082

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:\Program Files\Common Files\System\symsrv.dll.000

Filesize
175B

MD5
1130c911bf5db4b8f7cf9b6f4b457623

SHA1
48e734c4bc1a8b5399bff4954e54b268bde9d54c

SHA256
eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

SHA512
94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

Download Submit
C:\Users\Admin\AppData\Local\Temp\CabC1DB.tmp

Filesize
70KB

MD5
49aebf8cbd62d92ac215b2923fb1b9f5

SHA1
1723be06719828dda65ad804298d0431f6aff976

SHA256
b33efcb95235b98b48508e019afa4b7655e80cf071defabd8b2123fc8b29307f

SHA512
bf86116b015fb56709516d686e168e7c9c68365136231cc51d0b6542ae95323a71d2c7acec84aad7dcecc2e410843f6d82a0a6d51b9acfc721a9c84fdd877b5b

Download Submit
C:\Users\Admin\AppData\Local\Temp\TarC1FD.tmp

Filesize
181KB

MD5
4ea6026cf93ec6338144661bf1202cd1

SHA1
a1dec9044f750ad887935a01430bf49322fbdcb7

SHA256
8efbc21559ef8b1bcf526800d8070baad42474ce7198e26fa771dbb41a76b1d8

SHA512
6c7e0980e39aacf4c3689802353f464a08cd17753bd210ee997e5f2a455deb4f287a9ef74d84579dbde49bc96213cd2b8b247723919c412ea980aa6e6bfe218b

Download Submit
\Program Files\Common Files\System\symsrv.dll

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
\Users\Admin\AppData\Local\Temp\a2efe8a594613cf663bed72dd089b4fcd821fe05f1f45e203bec2e390519de7dN64.exe

Filesize
798KB

MD5
02052f2b49fe1cb6dd39a08622434d2e

SHA1
5196648e6b8db239ed8b14153bf46d5173608390

SHA256
752f7162b573933ad6a5c4a73fbfa8234d05f111b207acbb92c2380fb4dcffe7

SHA512
09278032c4b67d585e4a034e7bd29639109d2d8a229488420e10097a8e30d3272f1d9984df7bbcde743549127deb082b22899f147665ec1544224e0df95c99e7

Download Submit
memory/1712-70-0x0000000000C60000-0x0000000000E1B000-memory.dmp

Filesize
1.7MB

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memory/1712-72-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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memory/1712-76-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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memory/1712-80-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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memory/1712-84-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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memory/1712-3-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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memory/1712-88-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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memory/1712-92-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

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