nymaim | 7c975f8caf7ee056adb6fd93b1b803aafaa0305c3706ea76ea7bcc222369a680

Analysis

max time kernel
74s
max time network
80s
platform
windows7_x64
resource
win7-20220812-en
resource tags

arch:x64arch:x86image:win7-20220812-enlocale:en-usos:windows7-x64system
submitted
10/12/2022, 06:01

Sharing

Copy URL Twitter E-mail

Report Analysis Logs

General

Target
file.exe
Size 2.4MB
Sample221210-gqwlsahg6v
SHA256 7c975f8caf7ee056adb6fd93b1b803aafaa0305c3706ea76ea7bcc222369a680
MD5 944f3b242e35c3745144209203717866
SHA1 2438979c111804473a82f1da7d96675f939ddef4
SHA512 c6382d5928a9aedf40fefd851ba6da5e50feb146e09cf26de3fd1b5d674a54e554b0f9a9159feb0766ebc02f59a7f25ab8ce22142f52a4899a385e22359815ff
SSDEEP 49152:o12dRuxHRxs/irKtbkmc8Aa9yfkBzx6HozKUBxi4dxN5tVCQA4U5kgeOCgSY/Zd8:o12fYRxmzAj9k2HaKUjFdNxQmgcY/D8
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
696	is-M3IC6.tmp
888	nuFolders.exe
992	zHpLSu.exe

Loads dropped DLL 10 IoCs

pid	Process
1504	file.exe
696	is-M3IC6.tmp
696	is-M3IC6.tmp
696	is-M3IC6.tmp
696	is-M3IC6.tmp
888	nuFolders.exe
888	nuFolders.exe
888	nuFolders.exe
992	zHpLSu.exe
992	zHpLSu.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\unins000.dat	is-M3IC6.tmp
File created	C:\Program Files (x86)\PrintFolders\is-ESLKS.tmp	is-M3IC6.tmp
File created	C:\Program Files (x86)\PrintFolders\is-U7TUF.tmp	is-M3IC6.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\nuFolders.exe	is-M3IC6.tmp
File created	C:\Program Files (x86)\PrintFolders\is-MIMBF.tmp	is-M3IC6.tmp
File created	C:\Program Files (x86)\PrintFolders\is-M59KB.tmp	is-M3IC6.tmp
File created	C:\Program Files (x86)\PrintFolders\is-KHJSO.tmp	is-M3IC6.tmp
File created	C:\Program Files (x86)\PrintFolders\is-2TMA9.tmp	is-M3IC6.tmp
File opened for modification	C:\Program Files (x86)\PrintFolders\unins000.dat	is-M3IC6.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
576	taskkill.exe

Suspicious behavior: EnumeratesProcesses 3 IoCs

pid	Process
888	nuFolders.exe
888	nuFolders.exe
888	nuFolders.exe

Suspicious use of AdjustPrivilegeToken 3 IoCs

description	pid	Process
Token: SeRestorePrivilege	696	is-M3IC6.tmp
Token: SeBackupPrivilege	696	is-M3IC6.tmp
Token: SeDebugPrivilege	576	taskkill.exe

Suspicious use of WriteProcessMemory 35 IoCs

description	pid	Process	procid_target
PID 1504 wrote to memory of 696	1504	file.exe	26
PID 1504 wrote to memory of 696	1504	file.exe	26
PID 1504 wrote to memory of 696	1504	file.exe	26
PID 1504 wrote to memory of 696	1504	file.exe	26
PID 1504 wrote to memory of 696	1504	file.exe	26
PID 1504 wrote to memory of 696	1504	file.exe	26
PID 1504 wrote to memory of 696	1504	file.exe	26
PID 696 wrote to memory of 888	696	is-M3IC6.tmp	27
PID 696 wrote to memory of 888	696	is-M3IC6.tmp	27
PID 696 wrote to memory of 888	696	is-M3IC6.tmp	27
PID 696 wrote to memory of 888	696	is-M3IC6.tmp	27
PID 696 wrote to memory of 888	696	is-M3IC6.tmp	27
PID 696 wrote to memory of 888	696	is-M3IC6.tmp	27
PID 696 wrote to memory of 888	696	is-M3IC6.tmp	27
PID 888 wrote to memory of 992	888	nuFolders.exe	28
PID 888 wrote to memory of 992	888	nuFolders.exe	28
PID 888 wrote to memory of 992	888	nuFolders.exe	28
PID 888 wrote to memory of 992	888	nuFolders.exe	28
PID 888 wrote to memory of 992	888	nuFolders.exe	28
PID 888 wrote to memory of 992	888	nuFolders.exe	28
PID 888 wrote to memory of 992	888	nuFolders.exe	28
PID 888 wrote to memory of 1976	888	nuFolders.exe	31
PID 888 wrote to memory of 1976	888	nuFolders.exe	31
PID 888 wrote to memory of 1976	888	nuFolders.exe	31
PID 888 wrote to memory of 1976	888	nuFolders.exe	31
PID 888 wrote to memory of 1976	888	nuFolders.exe	31
PID 888 wrote to memory of 1976	888	nuFolders.exe	31
PID 888 wrote to memory of 1976	888	nuFolders.exe	31
PID 1976 wrote to memory of 576	1976	cmd.exe	33
PID 1976 wrote to memory of 576	1976	cmd.exe	33
PID 1976 wrote to memory of 576	1976	cmd.exe	33
PID 1976 wrote to memory of 576	1976	cmd.exe	33
PID 1976 wrote to memory of 576	1976	cmd.exe	33
PID 1976 wrote to memory of 576	1976	cmd.exe	33
PID 1976 wrote to memory of 576	1976	cmd.exe	33

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:1504
- C:\Users\Admin\AppData\Local\Temp\is-FG7QL.tmp\is-M3IC6.tmp
  "C:\Users\Admin\AppData\Local\Temp\is-FG7QL.tmp\is-M3IC6.tmp" /SL4 $60120 "C:\Users\Admin\AppData\Local\Temp\file.exe" 2303068 208896
  2⤵
  - Executes dropped EXE
  - Loads dropped DLL
  - Drops file in Program Files directory
  - Suspicious use of AdjustPrivilegeToken
  - Suspicious use of WriteProcessMemory
  PID:696
- - C:\Program Files (x86)\PrintFolders\nuFolders.exe
    "C:\Program Files (x86)\PrintFolders\nuFolders.exe"
    3⤵
    - Executes dropped EXE
    - Loads dropped DLL
    - Suspicious behavior: EnumeratesProcesses
    - Suspicious use of WriteProcessMemory
    PID:888
  - - C:\Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\zHpLSu.exe
      4⤵
      Executes dropped EXE
      Loads dropped DLL
      PID:992
  - - C:\Windows\SysWOW64\cmd.exe
      "C:\Windows\System32\cmd.exe" /c taskkill /im "nuFolders.exe" /f & erase "C:\Program Files (x86)\PrintFolders\nuFolders.exe" & exit
      4⤵
      Suspicious use of WriteProcessMemory
      PID:1976
    - - C:\Windows\SysWOW64\taskkill.exe
        
        taskkill /im "nuFolders.exe" /f
        5⤵
        Kills process with taskkill
        Suspicious use of AdjustPrivilegeToken
        
        PID:576

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

nuFolders.exe

Path C:\Program Files (x86)\PrintFolders\nuFolders.exe
Size 3.5MB
SHA256 922cf83a27aacc6ead7fcf13b7037ce68efe6070955fd6c0a3b1b0f5d07c7f76
MD5 fe9f66cd9da54135f796ee99f24553e2
SHA1 8510577e7f99aa1bdf22ed3c940a85868f1ac52d
SHA512 37604e8157de03149f3a1b367662863dcc535f97f5cb3074435cb0f963dee2dc7a76f9229879f1ab6e7a846de422c6d62003e4d6145cb2847b9228fef34c95ca
SSDEEP 98304:v1tyNc76+ncBoSvHw5A+eNXwsl676TQzPz:1MSoo3z
MD5 SHA1 SHA512 SSDEEP

Submit Download

nuFolders.exe

Path C:\Program Files (x86)\PrintFolders\nuFolders.exe
Size 3.5MB
SHA256 922cf83a27aacc6ead7fcf13b7037ce68efe6070955fd6c0a3b1b0f5d07c7f76
MD5 fe9f66cd9da54135f796ee99f24553e2
SHA1 8510577e7f99aa1bdf22ed3c940a85868f1ac52d
SHA512 37604e8157de03149f3a1b367662863dcc535f97f5cb3074435cb0f963dee2dc7a76f9229879f1ab6e7a846de422c6d62003e4d6145cb2847b9228fef34c95ca
SSDEEP 98304:v1tyNc76+ncBoSvHw5A+eNXwsl676TQzPz:1MSoo3z
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-M3IC6.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-FG7QL.tmp\is-M3IC6.tmp
Size 797KB
SHA256 3bf93457d2543be06c2ee6b1ca376fae57edb9087d72d3972b0b94bdc6bceed6
MD5 91afe004aef0db859b4db8d22a5731b7
SHA1 bae96f4862fdd2f374c2e6fbd70e795aead079b5
SHA512 1e8a8dc13e960be9e00eb0a45a43da860dbf4f1845218813d033e3d3bbe4bf4c93cf0a2c960f03a36841d263b11159bc21a8ac057053173e8c64bb77a8c860dd
SSDEEP 24576:n5NoqWolrP837JzHvA6yknyWFxvMfyxOu:njrP837JzHvA6pnvFxvMCp
MD5 SHA1 SHA512 SSDEEP

Submit Download

is-M3IC6.tmp

Path C:\Users\Admin\AppData\Local\Temp\is-FG7QL.tmp\is-M3IC6.tmp
Size 797KB
SHA256 3bf93457d2543be06c2ee6b1ca376fae57edb9087d72d3972b0b94bdc6bceed6
MD5 91afe004aef0db859b4db8d22a5731b7
SHA1 bae96f4862fdd2f374c2e6fbd70e795aead079b5
SHA512 1e8a8dc13e960be9e00eb0a45a43da860dbf4f1845218813d033e3d3bbe4bf4c93cf0a2c960f03a36841d263b11159bc21a8ac057053173e8c64bb77a8c860dd
SSDEEP 24576:n5NoqWolrP837JzHvA6yknyWFxvMfyxOu:njrP837JzHvA6pnvFxvMCp
MD5 SHA1 SHA512 SSDEEP

Submit Download

zHpLSu.exe

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

Submit Download

zHpLSu.exe

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

Submit Download

nuFolders.exe

Path \Program Files (x86)\PrintFolders\nuFolders.exe
Size 3.5MB
SHA256 922cf83a27aacc6ead7fcf13b7037ce68efe6070955fd6c0a3b1b0f5d07c7f76
MD5 fe9f66cd9da54135f796ee99f24553e2
SHA1 8510577e7f99aa1bdf22ed3c940a85868f1ac52d
SHA512 37604e8157de03149f3a1b367662863dcc535f97f5cb3074435cb0f963dee2dc7a76f9229879f1ab6e7a846de422c6d62003e4d6145cb2847b9228fef34c95ca
SSDEEP 98304:v1tyNc76+ncBoSvHw5A+eNXwsl676TQzPz:1MSoo3z
MD5 SHA1 SHA512 SSDEEP

Submit Download

nuFolders.exe

Path \Program Files (x86)\PrintFolders\nuFolders.exe
Size 3.5MB
SHA256 922cf83a27aacc6ead7fcf13b7037ce68efe6070955fd6c0a3b1b0f5d07c7f76
MD5 fe9f66cd9da54135f796ee99f24553e2
SHA1 8510577e7f99aa1bdf22ed3c940a85868f1ac52d
SHA512 37604e8157de03149f3a1b367662863dcc535f97f5cb3074435cb0f963dee2dc7a76f9229879f1ab6e7a846de422c6d62003e4d6145cb2847b9228fef34c95ca
SSDEEP 98304:v1tyNc76+ncBoSvHw5A+eNXwsl676TQzPz:1MSoo3z
MD5 SHA1 SHA512 SSDEEP

Submit Download

nuFolders.exe

Path \Program Files (x86)\PrintFolders\nuFolders.exe
Size 3.5MB
SHA256 922cf83a27aacc6ead7fcf13b7037ce68efe6070955fd6c0a3b1b0f5d07c7f76
MD5 fe9f66cd9da54135f796ee99f24553e2
SHA1 8510577e7f99aa1bdf22ed3c940a85868f1ac52d
SHA512 37604e8157de03149f3a1b367662863dcc535f97f5cb3074435cb0f963dee2dc7a76f9229879f1ab6e7a846de422c6d62003e4d6145cb2847b9228fef34c95ca
SSDEEP 98304:v1tyNc76+ncBoSvHw5A+eNXwsl676TQzPz:1MSoo3z
MD5 SHA1 SHA512 SSDEEP

Submit Download

_iscrypt.dll

Path \Users\Admin\AppData\Local\Temp\is-AEP1I.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-AEP1I.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-AEP1I.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

is-M3IC6.tmp

Path \Users\Admin\AppData\Local\Temp\is-FG7QL.tmp\is-M3IC6.tmp
Size 797KB
SHA256 3bf93457d2543be06c2ee6b1ca376fae57edb9087d72d3972b0b94bdc6bceed6
MD5 91afe004aef0db859b4db8d22a5731b7
SHA1 bae96f4862fdd2f374c2e6fbd70e795aead079b5
SHA512 1e8a8dc13e960be9e00eb0a45a43da860dbf4f1845218813d033e3d3bbe4bf4c93cf0a2c960f03a36841d263b11159bc21a8ac057053173e8c64bb77a8c860dd
SSDEEP 24576:n5NoqWolrP837JzHvA6yknyWFxvMfyxOu:njrP837JzHvA6pnvFxvMCp
MD5 SHA1 SHA512 SSDEEP

Submit Download

zHpLSu.exe

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

Submit Download

zHpLSu.exe

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

Submit Download

zHpLSu.exe

Path \Users\Admin\AppData\Roaming\{846ee340-7039-11de-9d20-806e6f6e6963}\zHpLSu.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/696-73-0x0000000003160000-0x00000000042EC000-memory.dmp

Download

memory/696-86-0x0000000003160000-0x00000000042EC000-memory.dmp

Download

memory/888-75-0x0000000001C90000-0x0000000002E1C000-memory.dmp

Download

memory/888-93-0x0000000000400000-0x000000000158C000-memory.dmp

Download

memory/888-77-0x0000000000400000-0x000000000158C000-memory.dmp

Download

memory/888-76-0x0000000001C90000-0x0000000002E1C000-memory.dmp

Download

memory/888-78-0x0000000000400000-0x000000000158C000-memory.dmp

Download

memory/888-74-0x0000000000400000-0x000000000158C000-memory.dmp

Download

memory/888-97-0x0000000000400000-0x000000000158C000-memory.dmp

Download

memory/888-87-0x0000000000400000-0x000000000158C000-memory.dmp

Download

memory/888-88-0x0000000001C90000-0x0000000002E1C000-memory.dmp

Download

memory/888-89-0x0000000010000000-0x000000001001B000-memory.dmp

Download

memory/1504-54-0x00000000768A1000-0x00000000768A3000-memory.dmp

Download

memory/1504-55-0x0000000000400000-0x0000000000439000-memory.dmp

Download

memory/1504-65-0x0000000000400000-0x0000000000439000-memory.dmp

Download

memory/1504-99-0x0000000000400000-0x0000000000439000-memory.dmp

Download