nymaim | 553fabdc1e4aeb9f808ebdd79f661653f0086a2c3e232c975e746a8413db80a2

Analysis

max time kernel
54s
max time network
57s
platform
windows7_x64
resource
win7-20220901-en
resource tags

arch:x64arch:x86image:win7-20220901-enlocale:en-usos:windows7-x64system
submitted
16/12/2022, 16:31

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
file.exe
Size 2.3MB
Sample221216-t1cymsfa72
SHA256 553fabdc1e4aeb9f808ebdd79f661653f0086a2c3e232c975e746a8413db80a2
MD5 99a939cab370df19b5da797de4cd8a04
SHA1 b0aef7f9666b74aefbe3457f842bf4791ce7bc83
SHA512 cfbbc9927b3b459359fcfc9a8310c97bcd0c25ecab78f33d7dc6eac54c00b1287f22a1b221b0d6c5659bff6f9f08d29da87ddae44b44f640ab8a24afd5189bbc
SSDEEP 49152:Up5vqVnxx/23iELLxs1OnLxUpnO2pxZ6m3ceCfmm1iZyTZqxeOCgSY/im+:Up5vqRxxe3i8qadMJZ6m3cekmVvxcY/o
MD5 SHA1 SHA512 SSDEEP

Score

10^/10

nymaim discovery trojan

Malware Config

Extracted

Family

nymaim

45.139.105.171
85.31.46.167

Signatures

NyMaim
NyMaim is a malware with various capabilities written in C++ and first seen in 2013.
trojan nymaim

Executes dropped EXE 3 IoCs

pid	Process
1108	is-UFU2U.tmp
1472	oaFolders.exe
1180	0kpN7XFWeK.exe

Loads dropped DLL 10 IoCs

pid	Process
1200	file.exe
1108	is-UFU2U.tmp
1108	is-UFU2U.tmp
1108	is-UFU2U.tmp
1108	is-UFU2U.tmp
1472	oaFolders.exe
1472	oaFolders.exe
1472	oaFolders.exe
1180	0kpN7XFWeK.exe
1180	0kpN7XFWeK.exe

Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
discovery

Query Registry
T1012

Drops file in Program Files directory 9 IoCs

description	ioc	Process
File created	C:\Program Files (x86)\PrintFolders\is-SU1UA.tmp	is-UFU2U.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-UFU2U.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\oaFolders.exe	is-UFU2U.tmp
File created	C:\Program Files (x86)\PrintFolders\is-3O9UB.tmp	is-UFU2U.tmp
File created	C:\Program Files (x86)\PrintFolders\is-328GB.tmp	is-UFU2U.tmp
File created	C:\Program Files (x86)\PrintFolders\is-T7OLJ.tmp	is-UFU2U.tmp
File created	C:\Program Files (x86)\PrintFolders\is-AP686.tmp	is-UFU2U.tmp
File created	C:\Program Files (x86)\PrintFolders\unins000.dat	is-UFU2U.tmp
File created	C:\Program Files (x86)\PrintFolders\is-4SBBA.tmp	is-UFU2U.tmp

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

System Information Discovery
T1082

Kills process with taskkill 1 IoCs

evasion

pid	Process
2000	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
1472	oaFolders.exe
1472	oaFolders.exe
1472	oaFolders.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeDebugPrivilege	2000	taskkill.exe
Token: SeRestorePrivilege	1108	is-UFU2U.tmp
Token: SeBackupPrivilege	1108	is-UFU2U.tmp

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1200 wrote to memory of 1108	1200	file.exe	27
PID 1200 wrote to memory of 1108	1200	file.exe	27
PID 1200 wrote to memory of 1108	1200	file.exe	27
PID 1200 wrote to memory of 1108	1200	file.exe	27
PID 1200 wrote to memory of 1108	1200	file.exe	27
PID 1200 wrote to memory of 1108	1200	file.exe	27
PID 1200 wrote to memory of 1108	1200	file.exe	27
PID 1108 wrote to memory of 1472	1108	is-UFU2U.tmp	28
PID 1108 wrote to memory of 1472	1108	is-UFU2U.tmp	28
PID 1108 wrote to memory of 1472	1108	is-UFU2U.tmp	28
PID 1108 wrote to memory of 1472	1108	is-UFU2U.tmp	28
PID 1108 wrote to memory of 1472	1108	is-UFU2U.tmp	28
PID 1108 wrote to memory of 1472	1108	is-UFU2U.tmp	28
PID 1108 wrote to memory of 1472	1108	is-UFU2U.tmp	28
PID 1472 wrote to memory of 1180	1472	oaFolders.exe	29
PID 1472 wrote to memory of 1180	1472	oaFolders.exe	29
PID 1472 wrote to memory of 1180	1472	oaFolders.exe	29
PID 1472 wrote to memory of 1180	1472	oaFolders.exe	29
PID 1472 wrote to memory of 1180	1472	oaFolders.exe	29
PID 1472 wrote to memory of 1180	1472	oaFolders.exe	29
PID 1472 wrote to memory of 1180	1472	oaFolders.exe	29
PID 1472 wrote to memory of 1992	1472	oaFolders.exe	32
PID 1472 wrote to memory of 1992	1472	oaFolders.exe	32
PID 1472 wrote to memory of 1992	1472	oaFolders.exe	32
PID 1472 wrote to memory of 1992	1472	oaFolders.exe	32
PID 1472 wrote to memory of 1992	1472	oaFolders.exe	32
PID 1472 wrote to memory of 1992	1472	oaFolders.exe	32
PID 1472 wrote to memory of 1992	1472	oaFolders.exe	32
PID 1992 wrote to memory of 2000	1992	cmd.exe	34
PID 1992 wrote to memory of 2000	1992	cmd.exe	34
PID 1992 wrote to memory of 2000	1992	cmd.exe	34
PID 1992 wrote to memory of 2000	1992	cmd.exe	34
PID 1992 wrote to memory of 2000	1992	cmd.exe	34
PID 1992 wrote to memory of 2000	1992	cmd.exe	34
PID 1992 wrote to memory of 2000	1992	cmd.exe	34

C:\Users\Admin\AppData\Local\Temp\file.exe
"C:\Users\Admin\AppData\Local\Temp\file.exe"
1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1200
- C:\Users\Admin\AppData\Local\Temp\is-B901T.tmp\is-UFU2U.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-B901T.tmp\is-UFU2U.tmp" /SL4 $80124 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2123679 208896
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:1108
- - C:\Program Files (x86)\PrintFolders\oaFolders.exe
    "C:\Program Files (x86)\PrintFolders\oaFolders.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:1472
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\0kpN7XFWeK.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:1180
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "oaFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\oaFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1992
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "oaFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:2000

Network

MITRE ATT&CK Enterprise v6

Initial Access

Execution

Persistence

Privilege Escalation

Defense Evasion

Credential Access

Discovery

Query Registry

T1012

System Information Discovery

T1082

Lateral Movement

Collection

Command and Control

Exfiltration

Impact

Replay Monitor

Loading Replay Monitor...

Downloads

oaFolders.exe

Path C:\Program Files (x86)\PrintFolders\oaFolders.exe
Size 3.4MB
SHA256 fd37e57f6359c92504848a22ee0b627e6ba2c5f5730efa8c4611e3132ae93b3b
MD5 13914a8a1f0cb6a247fe1fc9b873fb93
SHA1 6cfb0d1854a697e1da1b86d0649407b719bc43c0
SHA512 bdd255fcbeec76a5a39d9275665463d5f0643190b538fee67824424fb53a3211be6652ad01ae8c6208d8c58859f9c257070cf9e3306ed719258885314c489484
SSDEEP 98304:qYWVnTiu3ofIYfcA/k0KhZWVlkd3U8V1V++f:5fIOuJ7
MD5 SHA1 SHA512 SSDEEP

Submit Download

oaFolders.exe

Path C:\Program Files (x86)\PrintFolders\oaFolders.exe
Size 3.4MB
SHA256 fd37e57f6359c92504848a22ee0b627e6ba2c5f5730efa8c4611e3132ae93b3b
MD5 13914a8a1f0cb6a247fe1fc9b873fb93
SHA1 6cfb0d1854a697e1da1b86d0649407b719bc43c0
SHA512 bdd255fcbeec76a5a39d9275665463d5f0643190b538fee67824424fb53a3211be6652ad01ae8c6208d8c58859f9c257070cf9e3306ed719258885314c489484
SSDEEP 98304:qYWVnTiu3ofIYfcA/k0KhZWVlkd3U8V1V++f:5fIOuJ7
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-UFU2U.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-B901T.tmp\is-UFU2U.tmp
Size 797KB
SHA256 d0df1c119b09c7d2d6973428d794379d2366077185206e4787d76a0c35267d96
MD5 33067bd40abffd83261cc0aff0298b85
SHA1 f492c02df1ef097c24d2e93d3a80fa521e3d767e
SHA512 89b014df03a157b565009e96ec9a4520fc12412404ed5420b5a540bb5aca6a60352996c91e5b81c235f93dd1a5412fb79a84b30038913f103a78249384e8f648
SSDEEP 12288:Bh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvyzxxOu:n5NoqWolrP837JzHvA6yknyWFxvuxxOu
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-UFU2U.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-B901T.tmp\is-UFU2U.tmp
Size 797KB
SHA256 d0df1c119b09c7d2d6973428d794379d2366077185206e4787d76a0c35267d96
MD5 33067bd40abffd83261cc0aff0298b85
SHA1 f492c02df1ef097c24d2e93d3a80fa521e3d767e
SHA512 89b014df03a157b565009e96ec9a4520fc12412404ed5420b5a540bb5aca6a60352996c91e5b81c235f93dd1a5412fb79a84b30038913f103a78249384e8f648
SSDEEP 12288:Bh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvyzxxOu:n5NoqWolrP837JzHvA6yknyWFxvuxxOu
MD5 SHA1 SHA512 SSDEEP

Submit Download

0kpN7XFWeK.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\0kpN7XFWeK.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

0kpN7XFWeK.exe

Path C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\0kpN7XFWeK.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

oaFolders.exe

Path \Program Files (x86)\PrintFolders\oaFolders.exe
Size 3.4MB
SHA256 fd37e57f6359c92504848a22ee0b627e6ba2c5f5730efa8c4611e3132ae93b3b
MD5 13914a8a1f0cb6a247fe1fc9b873fb93
SHA1 6cfb0d1854a697e1da1b86d0649407b719bc43c0
SHA512 bdd255fcbeec76a5a39d9275665463d5f0643190b538fee67824424fb53a3211be6652ad01ae8c6208d8c58859f9c257070cf9e3306ed719258885314c489484
SSDEEP 98304:qYWVnTiu3ofIYfcA/k0KhZWVlkd3U8V1V++f:5fIOuJ7
MD5 SHA1 SHA512 SSDEEP

Submit Download

oaFolders.exe

Path \Program Files (x86)\PrintFolders\oaFolders.exe
Size 3.4MB
SHA256 fd37e57f6359c92504848a22ee0b627e6ba2c5f5730efa8c4611e3132ae93b3b
MD5 13914a8a1f0cb6a247fe1fc9b873fb93
SHA1 6cfb0d1854a697e1da1b86d0649407b719bc43c0
SHA512 bdd255fcbeec76a5a39d9275665463d5f0643190b538fee67824424fb53a3211be6652ad01ae8c6208d8c58859f9c257070cf9e3306ed719258885314c489484
SSDEEP 98304:qYWVnTiu3ofIYfcA/k0KhZWVlkd3U8V1V++f:5fIOuJ7
MD5 SHA1 SHA512 SSDEEP

Submit Download

oaFolders.exe

Path \Program Files (x86)\PrintFolders\oaFolders.exe
Size 3.4MB
SHA256 fd37e57f6359c92504848a22ee0b627e6ba2c5f5730efa8c4611e3132ae93b3b
MD5 13914a8a1f0cb6a247fe1fc9b873fb93
SHA1 6cfb0d1854a697e1da1b86d0649407b719bc43c0
SHA512 bdd255fcbeec76a5a39d9275665463d5f0643190b538fee67824424fb53a3211be6652ad01ae8c6208d8c58859f9c257070cf9e3306ed719258885314c489484
SSDEEP 98304:qYWVnTiu3ofIYfcA/k0KhZWVlkd3U8V1V++f:5fIOuJ7
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-UFU2U.tmp

Path \Users\Admin\AppData\Local\Temp\is-B901T.tmp\is-UFU2U.tmp
Size 797KB
SHA256 d0df1c119b09c7d2d6973428d794379d2366077185206e4787d76a0c35267d96
MD5 33067bd40abffd83261cc0aff0298b85
SHA1 f492c02df1ef097c24d2e93d3a80fa521e3d767e
SHA512 89b014df03a157b565009e96ec9a4520fc12412404ed5420b5a540bb5aca6a60352996c91e5b81c235f93dd1a5412fb79a84b30038913f103a78249384e8f648
SSDEEP 12288:Bh5UooqWolrP837JzHvA6izJgnnyFNmayiAZrvyzxxOu:n5NoqWolrP837JzHvA6yknyWFxvuxxOu
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-G7AR6.tmp\_iscrypt.dll
Size 2KB
SHA256 2f6294f9aa09f59a574b5dcd33be54e16b39377984f3d5658cda44950fa0f8fc
MD5 a69559718ab506675e907fe49deb71e9
SHA1 bc8f404ffdb1960b50c12ff9413c893b56f2e36f
SHA512 e52e0aa7fe3f79e36330c455d944653d449ba05b2f9abee0914a0910c3452cfa679a40441f9ac696b3ccf9445cbb85095747e86153402fc362bb30ac08249a63
MD5 SHA1 SHA512

Submit Download

_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-G7AR6.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

Submit Download

_shfoldr.dll

Path \Users\Admin\AppData\Local\Temp\is-G7AR6.tmp\_isetup\_shfoldr.dll
Size 22KB
SHA256 9884e9d1b4f8a873ccbd81f8ad0ae257776d2348d027d811a56475e028360d87
MD5 92dc6ef532fbb4a5c3201469a5b5eb63
SHA1 3e89ff837147c16b4e41c30d6c796374e0b8e62c
SHA512 9908e573921d5dbc3454a1c0a6c969ab8a81cc2e8b5385391d46b1a738fb06a76aa3282e0e58d0d2ffa6f27c85668cd5178e1500b8a39b1bbae04366ae6a86d3
SSDEEP 384:+Vm08QoKkiWZ76UJuP71W55iWHHoSHigH2euwsHTGHVb+VHHmnH+aHjHqLHxmoq1:2m08QotiCjJuPGw4
MD5 SHA1 SHA512 SSDEEP

Submit Download

0kpN7XFWeK.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\0kpN7XFWeK.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

0kpN7XFWeK.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\0kpN7XFWeK.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

0kpN7XFWeK.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\0kpN7XFWeK.exe
Size 72KB
SHA256 27ae813ceff8aa56e9fa68c8e50bb1c6c4a01636015eac4bd8bf444afb7020d6
MD5 3fb36cb0b7172e5298d2992d42984d06
SHA1 439827777df4a337cbb9fa4a4640d0d3fa1738b7
SHA512 6b39cb32d77200209a25080ac92bc71b1f468e2946b651023793f3585ee6034adc70924dbd751cf4a51b5e71377854f1ab43c2dd287d4837e7b544ff886f470c
SSDEEP 1536:bvUpDLxyxA14o3/M238r6+XfHAgbqmE8MpKdwuasZLUM7DsWlXcdyZgfmi:WDLZKa/MtXfHAgbqmEtxsfmyZgfmi
MD5 SHA1 SHA512 SSDEEP

Submit Download

memory/1108-73-0x00000000030B0000-0x000000000421E000-memory.dmp

Download

memory/1108-90-0x00000000030B0000-0x000000000421E000-memory.dmp

Download

memory/1200-97-0x0000000000400000-0x0000000000439000-memory.dmp

Download

memory/1200-55-0x0000000000400000-0x0000000000439000-memory.dmp

Download

memory/1200-54-0x0000000075AC1000-0x0000000075AC3000-memory.dmp

Download

memory/1200-72-0x0000000000400000-0x0000000000439000-memory.dmp

Download

memory/1472-78-0x0000000000400000-0x000000000156E000-memory.dmp

Download

memory/1472-74-0x0000000000400000-0x000000000156E000-memory.dmp

Download

memory/1472-77-0x0000000000400000-0x000000000156E000-memory.dmp

Download

memory/1472-86-0x0000000010000000-0x000000001001B000-memory.dmp

Download

memory/1472-76-0x0000000001C00000-0x0000000002D6E000-memory.dmp

Download

memory/1472-91-0x0000000000400000-0x000000000156E000-memory.dmp

Download

memory/1472-95-0x0000000000400000-0x000000000156E000-memory.dmp

Download

memory/1472-75-0x0000000001C00000-0x0000000002D6E000-memory.dmp

Download