floxif | e6e9923edcb92aa5b4194e670f94af1435b5ede9eb7c4fc2604e56481a4b9744

Analysis

max time kernel
119s
max time network
120s
platform
windows7_x64
resource
win7-20240708-en
resource tags

arch:x64arch:x86image:win7-20240708-enlocale:en-usos:windows7-x64system
submitted
05-08-2024 11:34

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General

Target

880f61558c6a2404be982ba625c56390N.exe
Size

443KB
MD5

880f61558c6a2404be982ba625c56390
SHA1

ee53795ceae1cfc9be2f56693b628ebed43df96e
SHA256

e6e9923edcb92aa5b4194e670f94af1435b5ede9eb7c4fc2604e56481a4b9744
SHA512

cbc1e9eacd14adc1e4d1c421abdaa4042afcbb166888b99912402a4afe825e928efc9b3bf181de3412b43cbf1b983f01c0ce1cd7760b6d3d944b43e0e327147f
SSDEEP

12288:AtbTE1rkt826L4xd1Ei05t6empQ+uK+JApHJBjvrEH7r:At818EiKTmp2oHXrEH7r

Score

10^/10

floxif mylobot backdoor botnet discovery persistence privilege_escalation trojan upx

Malware Config

Extracted

Family

mylobot

onthestage.ru:6521

krebson.ru:4685

stanislasarnoud.ru:5739

Signatures

Floxif, Floodfix
Floxif aka FloodFix is a file-changing trojan and backdoor written in C++.
backdoor trojan floxif
Mylobot
Botnet which first appeared in 2017 written in C++.
botnet mylobot

Detects Floxif payload 1 IoCs

backdoor

resource	yara_rule
behavioral1/files/0x000d00000001225f-1.dat	floxif

Blocklisted process makes network request 6 IoCs

flow	pid	Process
7	1064	cmd.exe
9	1064	cmd.exe
10	1064	cmd.exe
11	1064	cmd.exe
12	1064	cmd.exe
13	1064	cmd.exe

Event Triggered Execution: AppInit DLLs 1 TTPs
Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by AppInit DLLs loaded into processes.
persistence privilege_escalation

AppInit DLLs
T1546.010

ACProtect 1.3x - 1.4x DLL software 1 IoCs

Detects file using ACProtect software.

resource	yara_rule
behavioral1/files/0x000d00000001225f-1.dat	acprotect

Executes dropped EXE 2 IoCs

pid	Process
568	uhqudfuh.exe
2828	uhqudfuh.exe

Loads dropped DLL 6 IoCs

pid	Process
2028	880f61558c6a2404be982ba625c56390N.exe
2552	880f61558c6a2404be982ba625c56390N.exe
568	uhqudfuh.exe
2828	uhqudfuh.exe
1064	cmd.exe
1968	notepad.exe

UPX packed file 11 IoCs

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

upx

resource	yara_rule
behavioral1/files/0x000d00000001225f-1.dat	upx
behavioral1/memory/2028-4-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2028-40-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/568-41-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2828-62-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1064-69-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/2828-85-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1968-99-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/568-96-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1064-213-0x0000000010000000-0x0000000010030000-memory.dmp	upx
behavioral1/memory/1968-219-0x0000000010000000-0x0000000010030000-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\USER\S-1-5-21-3551809350-4263495960-1443967649-1000\Software\Microsoft\Windows\CurrentVersion\Run\eiqye = "C:\\Users\\Admin\\AppData\\Roaming\\epuaturr\\uhqudfuh.exe"	cmd.exe

Enumerates connected drives 3 TTPs 3 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:	880f61558c6a2404be982ba625c56390N.exe
File opened (read-only)	\??\e:	uhqudfuh.exe
File opened (read-only)	\??\e:	cmd.exe

Suspicious use of SetThreadContext 2 IoCs

description	pid	Process	procid_target
PID 2028 set thread context of 2552	2028	880f61558c6a2404be982ba625c56390N.exe	30
PID 568 set thread context of 2828	568	uhqudfuh.exe	32

Drops file in Program Files directory 2 IoCs

description	ioc	Process
File created	C:\Program Files\Common Files\System\symsrv.dll	880f61558c6a2404be982ba625c56390N.exe
File created	\??\c:\progra~1\common~1\system\symsrv.dll.000	cmd.exe

System Location Discovery: System Language Discovery 1 TTPs 6 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	cmd.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	notepad.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	880f61558c6a2404be982ba625c56390N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	880f61558c6a2404be982ba625c56390N.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uhqudfuh.exe
Key opened	\REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language	uhqudfuh.exe

Suspicious behavior: EnumeratesProcesses 5 IoCs

pid	Process
2028	880f61558c6a2404be982ba625c56390N.exe
568	uhqudfuh.exe
1064	cmd.exe
1064	cmd.exe
1064	cmd.exe

Suspicious use of AdjustPrivilegeToken 5 IoCs

description	pid	Process
Token: SeDebugPrivilege	2028	880f61558c6a2404be982ba625c56390N.exe
Token: SeDebugPrivilege	568	uhqudfuh.exe
Token: SeDebugPrivilege	2828	uhqudfuh.exe
Token: SeDebugPrivilege	1064	cmd.exe
Token: SeDebugPrivilege	1968	notepad.exe

Suspicious use of WriteProcessMemory 42 IoCs

description	pid	Process	procid_target
PID 2028 wrote to memory of 2552	2028	880f61558c6a2404be982ba625c56390N.exe	30
PID 2028 wrote to memory of 2552	2028	880f61558c6a2404be982ba625c56390N.exe	30
PID 2028 wrote to memory of 2552	2028	880f61558c6a2404be982ba625c56390N.exe	30
PID 2028 wrote to memory of 2552	2028	880f61558c6a2404be982ba625c56390N.exe	30
PID 2028 wrote to memory of 2552	2028	880f61558c6a2404be982ba625c56390N.exe	30
PID 2028 wrote to memory of 2552	2028	880f61558c6a2404be982ba625c56390N.exe	30
PID 2028 wrote to memory of 2552	2028	880f61558c6a2404be982ba625c56390N.exe	30
PID 2028 wrote to memory of 2552	2028	880f61558c6a2404be982ba625c56390N.exe	30
PID 2028 wrote to memory of 2552	2028	880f61558c6a2404be982ba625c56390N.exe	30
PID 2028 wrote to memory of 2552	2028	880f61558c6a2404be982ba625c56390N.exe	30
PID 2028 wrote to memory of 2552	2028	880f61558c6a2404be982ba625c56390N.exe	30
PID 2552 wrote to memory of 568	2552	880f61558c6a2404be982ba625c56390N.exe	31
PID 2552 wrote to memory of 568	2552	880f61558c6a2404be982ba625c56390N.exe	31
PID 2552 wrote to memory of 568	2552	880f61558c6a2404be982ba625c56390N.exe	31
PID 2552 wrote to memory of 568	2552	880f61558c6a2404be982ba625c56390N.exe	31
PID 568 wrote to memory of 2828	568	uhqudfuh.exe	32
PID 568 wrote to memory of 2828	568	uhqudfuh.exe	32
PID 568 wrote to memory of 2828	568	uhqudfuh.exe	32
PID 568 wrote to memory of 2828	568	uhqudfuh.exe	32
PID 568 wrote to memory of 2828	568	uhqudfuh.exe	32
PID 568 wrote to memory of 2828	568	uhqudfuh.exe	32
PID 568 wrote to memory of 2828	568	uhqudfuh.exe	32
PID 568 wrote to memory of 2828	568	uhqudfuh.exe	32
PID 568 wrote to memory of 2828	568	uhqudfuh.exe	32
PID 568 wrote to memory of 2828	568	uhqudfuh.exe	32
PID 568 wrote to memory of 2828	568	uhqudfuh.exe	32
PID 2828 wrote to memory of 1064	2828	uhqudfuh.exe	33
PID 2828 wrote to memory of 1064	2828	uhqudfuh.exe	33
PID 2828 wrote to memory of 1064	2828	uhqudfuh.exe	33
PID 2828 wrote to memory of 1064	2828	uhqudfuh.exe	33
PID 2828 wrote to memory of 1064	2828	uhqudfuh.exe	33
PID 2828 wrote to memory of 1064	2828	uhqudfuh.exe	33
PID 2828 wrote to memory of 1064	2828	uhqudfuh.exe	33
PID 2828 wrote to memory of 1064	2828	uhqudfuh.exe	33
PID 1064 wrote to memory of 1968	1064	cmd.exe	35
PID 1064 wrote to memory of 1968	1064	cmd.exe	35
PID 1064 wrote to memory of 1968	1064	cmd.exe	35
PID 1064 wrote to memory of 1968	1064	cmd.exe	35
PID 1064 wrote to memory of 1968	1064	cmd.exe	35
PID 1064 wrote to memory of 1968	1064	cmd.exe	35
PID 1064 wrote to memory of 1968	1064	cmd.exe	35
PID 1064 wrote to memory of 1968	1064	cmd.exe	35

C:\Users\Admin\AppData\Local\Temp\880f61558c6a2404be982ba625c56390N.exe
"C:\Users\Admin\AppData\Local\Temp\880f61558c6a2404be982ba625c56390N.exe"
1⤵
- Loads dropped DLL
- Enumerates connected drives
- Suspicious use of SetThreadContext
- Drops file in Program Files directory
- System Location Discovery: System Language Discovery
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of WriteProcessMemory
PID:2028
- C:\Users\Admin\AppData\Local\Temp\880f61558c6a2404be982ba625c56390N.exe
  "C:\Users\Admin\AppData\Local\Temp\880f61558c6a2404be982ba625c56390N.exe"
  2⤵
  - Loads dropped DLL
  - System Location Discovery: System Language Discovery
  - Suspicious use of WriteProcessMemory
  PID:2552
- - C:\Users\Admin\AppData\Roaming\epuaturr\uhqudfuh.exe
    "C:\Users\Admin\AppData\Roaming\epuaturr\uhqudfuh.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Enumerates connected drives
    - Suspicious use of SetThreadContext
    - System Location Discovery: System Language Discovery
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of AdjustPrivilegeToken
    - Suspicious use of WriteProcessMemory
    PID:568
  - - C:\Users\Admin\AppData\Roaming\epuaturr\uhqudfuh.exe
      "C:\Users\Admin\AppData\Roaming\epuaturr\uhqudfuh.exe"
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      System Location Discovery: System Language Discovery
      Suspicious use of AdjustPrivilegeToken
      Suspicious use of WriteProcessMemory
      PID:2828
    - - C:\Windows\SysWOW64\cmd.exe
        
        "C:\Windows\system32\cmd.exe"
        5⤵
        Blocklisted process makes network request
        Loads dropped DLL
        Adds Run key to start application
        Enumerates connected drives
        Drops file in Program Files directory
        System Location Discovery: System Language Discovery
        Suspicious behavior: EnumeratesProcesses
        Suspicious use of AdjustPrivilegeToken
        Suspicious use of WriteProcessMemory
        
        PID:1064
      - C:\Windows\SysWOW64\notepad.exe
        
        "C:\Windows\system32\notepad.exe"
        6⤵
        Loads dropped DLL
        System Location Discovery: System Language Discovery
        Suspicious use of AdjustPrivilegeToken
        
        PID:1968

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

AppInit DLLs

T1546.010

Privilege Escalation

Boot or Logon Autostart Execution

T1547

Registry Run Keys / Startup Folder

T1547.001

Event Triggered Execution

T1546

AppInit DLLs

T1546.010

Defense Evasion

Modify Registry

T1112

Credential Access

Discovery

Peripheral Device Discovery

T1120

Query Registry

T1012

System Information Discovery

T1082

System Location Discovery

T1614

System Language Discovery

T1614.001

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

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Downloads

C:\PROGRA~1\COMMON~1\System\symsrv.dll.000

Filesize
175B

MD5
1130c911bf5db4b8f7cf9b6f4b457623

SHA1
48e734c4bc1a8b5399bff4954e54b268bde9d54c

SHA256
eba08cc8182f379392a97f542b350ea0dbbe5e4009472f35af20e3d857eafdf1

SHA512
94e2511ef2c53494c2aff0960266491ffc0e54e75185427d1ccedae27c286992c754ca94cbb0c9ea36e3f04cd4eb7f032c551cf2d4b309f292906303f1a75fa0

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

Filesize
67KB

MD5
7574cf2c64f35161ab1292e2f532aabf

SHA1
14ba3fa927a06224dfe587014299e834def4644f

SHA256
de055a89de246e629a8694bde18af2b1605e4b9b493c7e4aef669dd67acf5085

SHA512
4db19f2d8d5bc1c7bbb812d3fa9c43b80fa22140b346d2760f090b73aed8a5177edb4bddc647a6ebd5a2db8565be5a1a36a602b0d759e38540d9a584ba5896ab

Download Submit
\Users\Admin\AppData\Roaming\epuaturr\uhqudfuh.exe

Filesize
443KB

MD5
880f61558c6a2404be982ba625c56390

SHA1
ee53795ceae1cfc9be2f56693b628ebed43df96e

SHA256
e6e9923edcb92aa5b4194e670f94af1435b5ede9eb7c4fc2604e56481a4b9744

SHA512
cbc1e9eacd14adc1e4d1c421abdaa4042afcbb166888b99912402a4afe825e928efc9b3bf181de3412b43cbf1b983f01c0ce1cd7760b6d3d944b43e0e327147f

Download Submit
memory/568-96-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/568-97-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/568-42-0x0000000000400000-0x0000000000460000-memory.dmp

Filesize
384KB

Download
memory/568-41-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1064-81-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1064-92-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1064-216-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1064-213-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1064-93-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1064-70-0x0000000000170000-0x0000000000178000-memory.dmp

Filesize
32KB

Download
memory/1064-80-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download
memory/1064-88-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1064-89-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1064-90-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1064-86-0x0000000000400000-0x000000000040B000-memory.dmp

Filesize
44KB

Download
memory/1064-75-0x0000000000180000-0x0000000000181000-memory.dmp

Filesize
4KB

Download
memory/1064-72-0x0000000000170000-0x0000000000178000-memory.dmp

Filesize
32KB

Download
memory/1064-68-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download
memory/1064-66-0x0000000000160000-0x0000000000161000-memory.dmp

Filesize
4KB

Download
memory/1064-69-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1968-219-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/1968-99-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2028-40-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2028-4-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2028-9-0x0000000000770000-0x0000000000771000-memory.dmp

Filesize
4KB

Download
memory/2552-18-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2552-10-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2552-24-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2552-14-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2552-16-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2552-27-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2552-20-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2552-12-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2552-22-0x000000007EFDE000-0x000000007EFDF000-memory.dmp

Filesize
4KB

Download
memory/2552-26-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2828-85-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download
memory/2828-64-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2828-63-0x0000000000400000-0x0000000000410000-memory.dmp

Filesize
64KB

Download
memory/2828-62-0x0000000010000000-0x0000000010030000-memory.dmp

Filesize
192KB

Download